SCMD4 Programming Guide FINAL DRAFT - iLight series SCMD4 Programming Guide Rev1 Jun17 Contents ... • Data transmission speed 1,200 Baud ... combined with an LED …

iLight series SCMD4 Programming Guide

Rev1 Jun17

Contents

1. SCMD4 & DALI Overview 3 DALI Control Overview 3 SCMD4 Features 3 Connection Diagram 4 Overview of SCMD4 in Device Editor 5 DALI Loops and Limits 10

2. Initial Setup 12

3. Configuring DALI Loop with Lighting Ballasts 13

Initialising a DALI Loop ` 13 Setting Groups and Recreating Controller 16 Assigning DALI Groups to Virtual Areas and Channels 18

4. Emergency DALI Ballast Configuration 19

Addressing and Adding DALI Emergency Ballasts 19 DALI Emergency Test Scheduler 21

5. DALI Input Devices – Sensors 22

Initialising and Addressing DALI Sensors 22 Sensor Engine Assignment 26 Programming Sensor Actions 28

6. DALI Input Devices – Keypads 29

Addressing and Initial Setup 29 Configuring Keypad Button Actions 34

7. RS485 and DMX Input 36

8. Heartbeat Mode 38

SCMD4 Programming Guide

Eaton Lighting Systems 20 Greenhill Crescent, Watford Business Park,

Watford, Hertfordshire, WD18 8JA, UK

T: +44 (0)1923 495495 F: +44 (0)1923 228796

E: [email protected] www.ilight.co.uk

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Introduction

This programming guide provides guidance for how to configure the iLight series SCMD4 DALI Controller and associated DALI products. Please consult the Product Datasheet and Installation Manual for information on device specifications and installation procedure. These documents are available to download from the iLight website. www.ilight.co.uk This programming manual is aimed at those already familiar with the iLight software and principles of DALI networks. Some specific terminology will be defined along with control concepts where applicable.

Software Compatibility

The SCMD4 DALI Controller is only compatible with Device Editor and Floor Plan Editor software. It cannot be configured using iCANsoft. Check the iLight Technical Support Download Centre for iLight software updates and to ensure you are using the most up to date version of firmware in your SCMD4. www.ilight.info NOTE: Software and firmware downloads are available for registered / approved user only.




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1. SCMD4 & DALI Overview

DALI Control Overview DALI (Digital Addressable Lighting Interface) is an industry standard digital data network with an open topology. As a result all devices are connected in parallel and the network will accept spurs and star wiring layouts. DALI operates as a digital signalling network over a 2-core cable. Cabling should be treated as mains as it may be run in containment with mains voltage supplies.

• Maximum cable length of DALI control wires for different cables cross sections Cable cross-section 2 x 0.5 mm

2 2 x 0.75 mm

2 2 x 1.0 mm

2 2 x 1.5 mm

2

Single cable length*

(= max. distance from

power supply)

116m 174m 232m 300m

*This is the total length including all the cable on the network. If you exceed any of these lengths the only way to overcome it is to add additional DALI source devices - there are no boosters available.

• This should be standard mains rated cables for electrical installation. It should not be CAT5 or any other SELV data cable.

• Digital interface insulated in accordance with EN 60928 (basic insulation) not SELV. • DALI voltage 9.5–22.4 V (DC) • The DALI standard requires that the voltage drop between the power supply and any DALI

device be no more than 2 volts. • DALI system current, max. 250mA • Data transmission speed 1,200 Baud

Advice and Recommendations:

• DALI devices are supposed to interoperable but where possible it is recommended that devices should be from the same manufacturer.

• Wiring is NOT SELV. • Only 64 devices per DALI loop. Make sure you know how many devices are supposed to be

present on the network. • Allow extra time for commissioning, as each fitting has to be identified and configured unless

broadcast messaging only is used. • All fittings must be present when system is commissioned. The system cannot be configured

for fittings to be fitted later. If fittings are interchanged on a system the fitting address moves with the fitting!

• You cannot join the outputs of two or more DALI controllers together.

SCMD4 Features The SCMD4 is a 4 Loop DALI ballast controller enabling dimming and switching of up to 256 individual addressable DALI devices including luminaires and Eaton DALI relays. Eaton DALI multi-sensors and control panels can be added to the DALI loops creating a complete DALI solution.




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SCMD4 features direct DMX and RS485 control allowing the unit to be integrated with other systems. The switch inputs provide connection to fire or security systems or the use of remote switches and sensors.

Connection Diagram

iLight CAN Network Connection Eaton recommend Belden 1502 for the iLight CAN network cable.

Function Colour (Belden 1502) +V Red

CAN H White

Shield Shield

CAN L Blue

0V Black

If the SCMD4 is in the middle of the network, loop the data cable in and out of this connector to continue the ‘daisy-chain’ of devices. If the SCMD4 is at the end-of-line position on the network, network termination jumper should be moved to the ON position to apply the termination resistor.




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Overview of SCMD4 in Device Editor The SCMD4 is only supported in Device Editor software and is not configurable in the preceding iCANsoft application. It is recommended to make sure that you are using the latest version of Device Editor software, and SCMD4 firmware. Check with iLight technical support or visit www.ilight.info for software and firmware downloads (registered users only).

General Tab

The General tab displays the status information about the device along with specific device information such as firmware and serial number. The Name field is editable. Here you can enter a new name for the device which may reference its physical location or site-specific labelling. Supply Monitor displays the voltage being measured by the device at its position on the iLight network. For output devices this should be consistent with the voltage supplied to the network by this device (12V-15Vdc). For input devices such as control panels this will indicate the voltage being received by this device. The reading can be refreshed by using the tab Reload button at the bottom of the window. Custom Editors are drop down options for opening plug-in tools or sub-application specific to this device. These are for additional configuration actions. For the SCMD4 this is where the DALI Tool is opened. This is explained further in the later section on the DALI Tool. The Settings window has editable parameters for optional features.

• Serial: Edit the communication settings for the serial port (baud rate, parity etc.)

• Debug: If True (active) then additional information is displayed in the CAN network monitor trace for diagnostic purposes.

• Startup: Allows you to set an action to occur when the device powers up. For example, this

could be to choose a default scene that outputs revert to after power is restored following an outage.




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Outputs Tab Settings View:

Levels View:

The Settings view shows the outputs and their configurable parameters. Each output represents a DALI Group (16 per loop).




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Engines Tab

The Engines tab is where Movement, No-Movement and Daylight Linking settings are configured for DALI Sensors. There are 36 Engines available per SCMD4. Sensors in use show the ‘gears’ icon. Unused Engines remain as a blank blue square. When an Engine is selected the configuration is shown in the Summary window to the right. The adjacent Graphic Editor tab switches this view to the visual feedback view for the currently selected Engine, either for Movement or Daylight Linking configuration according to what is currently selected in the Properties window. Setup of DALI Sensors and the use of Engines is explained in the DALI Sensors section of this guide.

DALI Keypads Tab

The DALI Keypads tab is where settings are configured for DALI Keypads.




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Setup of DALI Keypads is explained in the DALI Keypads section of this guide.

DALI Sensors Tab

The DALI Sensors tab is where DALI Sensor inputs are assigned to Areas (and therefore Engines). A maximum of 36 DALI sensors can be connected per SCMD4; 8 per loop. When a sensor is selected the configuration is shown in the Properties window to the right. Setup of DALI Sensors and the role of the DALI Sensors tab is explained in the DALI Sensors section of this guide.

Sequences Tab

The SCMD4 has storage capacity for 16 sequences. Each sequence can have up to 128 steps.

Inputs Tab




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The SCMD4 has 2 volt-free input ports. These can be used as fire alarm inputs or configured in this tab with other input actions.

Heartbeat Tab

Heartbeat settings are configured here. Heartbeat is an optional setting. See section on Heartbeat Configuration later in this guide.

Diagnostics Tab

The Diagnostics tab is a simple means to trigger the Startup Action and the two input press/release actions manually for testing purposes. Click on the desired action and press the test button above the column to broadcast the highlighted action. You cannot edit the actions displayed in the Diagnostic window. To edit the Startup Action you need to return to the General tab. To edit the input actions you need to return to the Inputs tab.




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DALI Loops and Limits The amount of devices that can be connected to any single loop of the SCMD4 varies according to the device type and, in some cases, how it is programmed.

Generic ballast 63

DALI Ineo keypad – all basic actions 63

DALI Ineo keypad – all repeating actions 10

NOTE: Memory allowance permits a maximum of 10 keypads with repeating actions along with 53

with basic actions on the same loop.

DALI Sensor 8

DALI Relay Module 63

SCMR1232 outputs 60 (5 x 12ch with 3 surplus addresses)

SCMH1200 outputs 60 (5 x 12ch with 3 surplus addresses)

DALI EMPRO / Emergency ballast 1 address per EMPRO*

*NOTE: There are two types of EM-PRO available, one is the traditional type and a new one which is

combined with an LED driver and uses just one short address. The ‘traditional’ type may or may not

be connected to work with an additional ballast, depending on whether the fitting is a dimmable

emergency fitting or not. If so, the dimmable part is done by a second (ordinary) ballast while the

emergency functionality is handled by a dedicated EM-PRO. This fitting would therefore have two

short addresses assigned, one for the EM-PRO and one for the dimming ballast.

However, the fitting may be just emergency, in which case only one short address would be used (for

the EM-PRO itself). All set-ups would still be limited to a maximum of 63 short addresses per loop.

In all cases, in addition to the addressing constraints of DALI listed in the table, there is also a limit on

the current drawn from the DALI bus. This provides for new DALI devices to take more than the 2 mA

a ballast is allowed, but there is clearly a trade-off in maximum capacity per loop.

Overriding DALI Loops Manually For testing DALI loops prior to commencing programming, or for troubleshooting suspected DALI cable infrastructure issues, each loop can be independently placed into an override mode and all output devices turned on and off.

A prolonged press of a DALI (1,2,3,or 4) button on the front panel of the SCMD4 will put that loop into

override mode.




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The flashing pattern of the orange LED for the corresponding loop will become visibly different to non-

overridden loops to indicate the override mode is active. Pressing the button again sends a broadcast

‘all to 100% command’. On the next press of the button, a broadcast ‘all to 0% command’ is sent. This

pattern continues with each subsequent press of the button.

To exit override mode press and hold the corresponding DALI button for this loop until the orange

LED reverts to the standard pattern.




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2. Initial Setup

Reading SCMD4 into Device Editor Open the Network Search and click Search. Double click on the SCMD4 to read this into the software. NOTE: The SCMD4 contains many parameters for both outputs of the unit and input devices, as well as sensor engines. This means that the SCMD4 can take several minutes to fully read in, especially on busy iCAN networks. Identifying and Renumbering The SCMD4 can be renumbered either before or after reading the device into the software.

• To renumber before reading, right-click on the SCMD4 in the Network Search and select Renumber.

• To renumber after the device is added, right-click on

the SCMD4 in the Devices list and select Renumber.

By default, the unit will be numbered 255-‘xxx’. The

segment and node range can be reallocated between

1 and 253 for either value.

When you have more than one SCMD4 you will need to

identify which one is which. To do this press the Ident button

on the front panel of the SCMD4. The corresponding unit will

appear in bold text in the Devices list.




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3. Configuring a DALI Loop with Lighting Ballasts

Initialising a DALI Loop

This example follows the process of configuring ballasts on single DALI loop using an example of a small office project to illustrate the process. None of the ballasts have yet been initialised so are lacking a short address and grouping.

From the General tab, open the DALI Tool by selecting the loop that the ballasts are connected to.

The DALI Tool will open and immediately start to scan for DALI ballasts. Any existing initialised ballasts will be displayed, otherwise the list will remain empty and the Initialise Unaddressed button will flash to indicated that unaddressed ballasts have been discovered.




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To begin initialising ballasts, click on the Initialise Unaddressed button. You may also see the Automatic Issue Resolution window appear summarising the action that needs to take place. Click Resolve Issues to continue with the Initialisation process.

NOTE: Detecting unaddressed ballasts is an essential part of the DALI commissioning process even though this is highlighted as an ‘issue’. Ballasts should not be left unaddressed as this will cause them to not respond to any commands and cause Installation Errors to appear on the network.




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Ballasts (Devices) will be listed one at a time as they are addressed until all have been given a short address. The total will be listed. Click OK to continue.

The DALI Tool will conduct another scan of the loop and this time the ballasts will now be listed in ascending order of short address.

DALI addresses are randomly assigned to ballasts. Before ballasts can be grouped they need to be located in reality. With the tick box selected next to a ballast the light will flash on and off enabling it to be visibly identified. This needs to be marked on a plan.




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(above) Ballast 1 is set to flash mode and is then marked on a plan. Repeat the process until all ballasts on the loop have been identified.

Setting Groups and Recreating Controller Ungrouped devices are listed with a light blue background. If any ballasts lack a group this is notified in the report that appears after a Loop is scanned. To assign a ballast to a group, double click on that ballast and choose the group number, then click the OK button. The group number is immediately programmed to the ballast. NOTE: A ballast can only be assigned to a single group at any time.

Once you have finished grouping all ballasts and before exiting DALI Tool you must select Tools > Recreate Controller in order to update the SCMD4 with the addressing of the DALI devices.




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You will be asked to confirm this action and notified to Reload the SCMD4 in Device Editor after exiting DALI Tool.

In Device Editor, select Reload Device.

Over a wired connection (PC Node) a complete reload of the SCMD4 will take approximately 2 minutes. This should be slightly faster over a TCP/IP connection (using EG2 Ethernet Gateway). We now have addressed ballasts grouped according to how we want to control them, in the example. If we view this as a table (below), in ascending ballast address order and colour coded by Area, the randomness of the ballast addressing, relevant to the intended Virtual Area and Channel allocation, becomes evident:




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Once ballasts are addressed and grouped, we can now start considering the organisation of the DALI lighting in terms of Virtual Area and Channel numbering since this is the way we must arrange the outputs for control by input devices.

(above) The table is now organised by Area, and ascending Channel number within. This demonstrates how the second phase of DALI commissioning makes the short address of ballasts less important. As long as the ballast each have a unique address between 1 and 63 and are assigned into groups, according to how they will be controlled, the focus shifts to allocating DALI Groups to Virtual Areas and Channels.

Assigning DALI Groups to Virtual Areas and Channels Generally, a group will be assigned to a unique Virtual Channel. Remember that the DALI group and Virtual Channel number bear no relation numerically. It is possible for multiple groups to be assigned to the same virtual channel if the scenario dictates, though they would usually be bound by the same DALI group number if they are meant to work together. The Virtual Items list should be populated with the required number of Areas and the Virtual Channels listed and labelled for each Area. This should be completed ahead of Area & Virtual Channel assignment to outputs. Outputs can then be reassigned to the correct Area and Channel according to the control scheme design. (By default, all outputs are in Area 1)

Once outputs have been setup, click Apply to save to the device. Areas can now have Scenes configured using the Scene Editor as with any type of Source Controller.




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4 Emergency DALI Ballast Configuration

Addressing & Adding Emergency Ballasts Emergency DALI ballasts (e.g. EM Pro) allow for feedback on the battery status, emergency lamp status (if separate to standard fitting) and remote Function and Duration testing to take place. Emergency ballasts may be part of a loop of standard light fittings and will appear as individual blasts with their own short address. If adding an emergency ballast to an existing DALI network, ppen DALI Tool for the corresponding Loop. You will be prompted that new ballast has been found. Either choose the Resolve Issues option from the Automatic Issue Resolution window or close this and click on the Initialise Unaddressed button from the toolbar (flashing red).

The Automatic Issue Resolution window will report on the successful initialisation.




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After click on Close the Loop will be rescanned and the ballast listed as Emergency.

Auto Testing in emergency ballasts is usually active by default. You will be notified of this in the Status column. To edit or disable Auto Testing settings, right click on the ballast and select Properties.

The emergency ballast must be assigned to a Group. Typically, you would want to assign emergency ballasts to one or two groups, separate from the regular light fittings, and regardless of location, so




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that tests can be scheduled and reports given from a limited number of Groups.

It is recommended to set the Group high (e.g. 16) in order to leave lower group numbers clear for non-emergency lighting ballasts and DALI input devices.

Once Group and Auto Testing settings have been configured you can exit the DALI Tool. You must Recreate Controller before closing the DALI Tool to sync the SCMD4 with the DALI bus.

DALI Emergency Test Scheduler The DALI Emergency Test Scheduler Runs as separate program and is used to configure EM testing per device. Function and Duration Tests can be scheduled to run at regular intervals.




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5. DALI Input Devices: Sensors

There are two types of sensor compatible with the SCMD4 for direct connection to DALI loops. MTS6 Ceiling mounted multi-sensor for general interior applications.

• An unaddressed MTS6 sensor will be indicated by the LEDs on the sensor flashing every 10

seconds. • The LEDs will also flash blue when movement is detected, even if the sensor is not yet

configured. • The LEDs will flash red when polling no-movement.

PPAD-C-HB-DALI-ADDR High-bay multi-sensor for interior applications.

Initialising and Addressing DALI Sensors On the General tab of the SCMD4, open the DALI Tool from the Custom Editors option. You must then select the Loop (1-4) that the sensor is wired to.

The DALI Tool will open and immediately scan this Loop for DALI devices.




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Just like a typical DALI ballast, newly added DALI sensors will lack a short address and will require initialisation. The presence of any uninitialised devices will result in the Automatic Issue Resolution window appearing with information and to request further user action. The Initialise Unaddressed button will also be flashing. Click on the green Resolve Issues button to continue.

Once complete you can review the actions taken in the Automatic Issue Resolution summary.

Once this window is closed, the Loop will be rescanned and the sensor will now appear with a short address.




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Upon completion of any scan, a DALI Scan Report will appear listing the number of devices and status information. This can be saved for records or closed to continue the setup process.

The sensor will be listed as a ‘FifthLight Motion Sensor (100)’ by type.

DALI sensors do not require a Group to be set. Sensors will be configured to operate independently or as groups by their assignment to Engines, rather than grouping in the DALI network. To identify and locate one DALI sensor from others on the same Loop, tick the Address box next to the sensor. The LEDs on the selected sensor will then start to rapidly flash red. The location of the sensor can then be marked on a schematic/drawing for records. This will be necessary for reference when assigning sensors (by address) to Engines.




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Before exiting DALI Tool you must select Tools > Recreate Controller in order to update the SCMD4 with the addressing of the DALI devices.



Over a wired connection (PC Node) a complete reload of the SCMD4 will take approximately 2 minutes. Up to 8 DALI sensors can be connected to each Loop, and each sensor occupies one of the maximum of 64 addresses per Loop. Therefore you can connect a maximum of 36 DALI sensors to a single SCMD4 (8 per loop x 4 loops). Setting Sensor Defaults It is vital that the default calibration settings are used for the sensors, otherwise they will not work correctly. You will be notified in the DALI Tool if the sensor is not using the default settings.




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To apply the correct settings, right-click on the Sensor and select Properties. Click on the Set Default button then select OK.

Repeat for all sensors that show the warning.

Sensor Engine Assignment Sensors are made operational by assigning them to an Engine. An Engine is a programmable module that contains the settings for sensor’s control Area, movement and no-movement actions, timeout times, dependencies and external control overrides. There are 36 Engines available in the SCMD4, allowing individual sensors to operate from their own engine if necessary. Alternatively, multiple sensors can be assigned to the same Engine therefore grouping their operation as they will all respond according to the configuration of their shared Engine. You should configure your Engines, then assign the relevant sensors to them. Sensors and Engines are paired according to Area assignment, since both can only be assigned to a single Area. Select the Engines tab. The 36 Engine modules are displayed. When unused these are blank blue squares.




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Right click on the first available Engine and select Assign to Area. Choose an Area form the list that appears.

Once you have selected the Area, click Apply at the top of the window to write this change to the SCMD4. When an Engine is assigned to an Area, and therefore in use, the icon will change as shown below




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and the Area number is displayed underneath.

Assigning Sensors to Engines The Engine determines what the sensors of that Area operate. Once the Engine is configured you must assign the relevant sensors to the Area, which in turn will link them to the Engine. To assign a sensor to an Area, go to the DALI Sensors tab and locate the desired sensor. (left) In this example only a single sensor is connected, on Loop 3 (L3), so it appears as a green square with the short address below. Right-click on the Sensor and select Assign to Area. Choose the Area that matches the Engine and then click Apply at the top of the tab. When assigned to an Area, the Sensor icon is visible and the Area and Input ID is shown below the icon.

The Input ID is used to distinguish one sensor from another within the same Area. If all sensors in an Area have the same Input ID then any commands targeting that Input (e.g. Enable/Disable, or Virtual Events) will apply to all sensors. By having individual Input ID the activity of a specific sensor within an Area can be monitored and targeted.

Programming Sensor Actions Occupancy detection, Absence detection and daylight linking are all configured in the Engine properties. There are extensive setting options depending on the application. This is covered in detail in a separate document – the Sensor Engine Programming guide.




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6. DALI Input Devices: Keypads

DALI keypads are available in a variety of button layouts and can be programmed to perform most

common input actions. Being DALI network devices they also need to be addressed and located via

DALI Tool prior to configuring the button actions in Device Editor.

Addressing and Initial Setup In the General tab of the SCMD4, open the DALI Tool from the Custom Editors option. You must then select the Loop (1-4) that the keypad is wired to.

The DALI Tool will open and immediately scan this Loop for DALI devices. Just like a typical DALI ballast, newly added DALI keypads will lack a short address and will require initialisation. The presence of any uninitialised devices will result in the Automatic Issue Resolution window appearing with information and to request further user action. The Initialise Unaddressed button will also be flashing. Click on the green Resolve Issues button to continue.




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Once complete you can review the actions taken in the Automatic Issue Resolution summary. Once this window is closed, the Loop will be rescanned and the keypad will now appear with a short address. Upon completion of any scan, a DALI Scan Report will appear listing the number of devices and status information. This can be saved for records or closed to continue the setup process.

The sensor will be listed as ‘FifthLight Ineo Keypad (101)’ by type.




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Like DALI sensors, keypads do not require a Group to be set. Keypads will be configured to operate individually or with duplicate operations through the button action configuration. To identify and locate one DALI keypad from others on the same Loop tick the Address box next to the keypad. The button LEDs on the selected keypad will then start to flash rapidly.

The location of the keypad can then be marked on a schematic/drawing for records. This will be necessary for reference when assigning button actions. Configuring Keypad Layout It is vital that the correct button layout applied to each keypad, otherwise they will not work correctly. You will be notified in the DALI Tool if the keypad does not have any button arrangement assigned (default). NOTE: Since the hardware is identical for all arrangements, you will not be warned if the button arrangement vs. the physical arrangement of the buttons is incorrect. You must check manually that this is correct.




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To apply the button layout settings, right-click on the keypad and select Properties. Then select the relevant button layout from the drop-down box. d Operating Mode: This not configurable. LED Brightness: You can set the brightness for all LEDs on the keypad between 0% (always off) to 100%. Click OK to apply changes and close this dialogue box.

Before exiting DALI Tool you must select Tools > Recreate Controller in order to update the SCMD4

with the addressing of the DALI devices.





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Over a wired connection (PC Node) a complete reload of the SCMD4 will take approximately 2 minutes. The number of keypads that can be connected to any single loop of the SCMD4 varies according to the use of standard actions or repeating actions (toggle).

DALI Ineo keypad – all basic actions 63

DALI Ineo keypad – all repeating actions 10

NOTE: Memory allowance permits a maximum of 10 keypads with repeating actions along with 53

with basic actions on the same loop.

Standard Actions

Repeating Actions

Select Scene Two Button Up Set Channel to Level Two Button Down Channel Increment Channel Decrement Start Sequence Stop Sequence Pause Sequence Virtual Event Virtual Panel State Device State Holiday Mode Alarm Mode Send CAN Message




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Configuring Keypad Button Actions After the SCMD4 has been reloaded available keypads show in the list on the DALI Keypads tab. They will be grouped in the list by Loop with ascending short addresses. Therefore it is important to have made a note of which keypad is which, by short address, to know which keypad to configure. To configure the button actions, click on the keypad and the button action will be displayed to the right.

Note that all possible buttons are visible even if the keypad does not use them. For keypads with double buttons you only need to program the button at the top of the overall button position. For example, a 3 Large Button layout only needs buttons 1, 3, and 5 to be programmed with the required actions.

Once you have finished configuring the buttons click Apply at the top of the tab to write this to the SCMD4. Two-Button Up / Down The Two-Button up/down action is a dual feature control option which does the following actions:

• Short press – Selects a Scene (default)

• Long press & hold - Dims the lights (channel increment/decrement)




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Changing Area of All Buttons You can set the Area for all buttons by selecting a panel and changing the Area parameter in the Properties window (do not select a specific button). This is a quick way to change the Area of multiple panels where the button actions are otherwise the same.




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7. RS485 / DMX Input

RS485 Mode To operate the SCMD4 by RS485 input you must ensure that the RS485/DMX input port is set to RS485 Mode. The default mode is RS485 so this should not need to be changed unless the port was previously used in DMX mode. To set the port to RS485 Mode, go to the General Tab and click on the Serial parameter block in the Settings window. If the unit was in DMX Mode before, you must then cycle the power to the SCMD4 so that is starts up with ASCII mode enabled.

In the Properties window you can adjust the operating parameters for the RS485 if necessary. In RS485 mode, the port is bi-directional enabling feedback to third-party systems. The port will transmit all applicable commands broadcast on the iCAN network, not just those generated from the SCMD4. Therefore on a single RS485 connection is required on a system or network segment where BN-2 Bridges may be used to filter messages. The SCMD4 will respond only to the set ASCII messages, not custom commands. For custom serial commands you will need to use the RS232 SI-2 System Integrator.

DMX Mode To operate the SCMD4 by DMX input you must first set the RS485/DMX input port to DMX Mode. The default mode is Rs485. To set the port to DMX Mode, go to the General Tab and click on the Serial parameter block in the Settings window.

In the Properties window, select DMX in the Operating Mode parameter, then clock Apply at the top of the tab.




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You must then cycle the power to the SCMD4 so that is starts up with DMX mode enabled. Setting DMX Address of Outputs In DMX mode the outputs operate with base address 1. To change the DMX address for an output go to the Outputs tab, click on the desired output and use the parameters in the Properties window to set the address. This can be between 1 and 512.

Setting DMX Operation Mode There are 3 options to set how an output operates when a DMX source is present at the DMX input:

• DMX if Present: this is the default mode and means that the output will be controlled by DMX when there is DMX active at the DMX input. During that time the output will not respond to iCAN commands.

• DMX Only: The output will only operate when a DMX input source is present. It will never

respond to CAN commands even if no DMX source is present.

• CAN Only: The output will only operate from iCAN network commands. It will never respond to DMX commands even if a DMX source is present. This is used to effectively disable the output when DMX is in use to avoid it being operated.




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8. Heartbeat Mode

What is Heartbeat Mode? Heartbeat is a monitoring system that allows an output device to respond to a loss of CAN network communication. In the event of it detecting a loss of communication (falling ‘offline’) the output device will respond by setting itself to an failure status, for example turning all outputs to full power to make sure lighting is on rather than some outputs remaining off, unable to be turned on from input devices. It is essential an automatic override mode in the event of suspected CAN communication loss. This is an optional feature but is easily implemented by selecting one or more devices to broadcast a heartbeat ‘ping’ message constantly over the CAN network. This is achieved by creating a sequence loop containing the Heartbeat message. The device running the sequence should be send a CAN Message ‘ID 031, Segment, Node’ every 60

seconds maximum. A 30 second interval is recommended in case a message gets lost (particularly on

networks with high traffic levels). The Seg or Node value can be defined as 00 to indicate ‘all’, e.g.

031 Seg 00 Node 00’ will send a Heartbeat message applicable to all device IDs across the entire

network, whereas ‘031 Seg 64 Node 00’ will send the Heartbeat message to all devices but only in

Segment 100 (devices with IDs 100-xxx).

(Seg and Node values are defined in Hex)

The heartbeat message itself contains no further payload beyond the Segment and Node value.

There is no reply to this message.

Example of Heartbeat message in Control Panel with 30 second interval. To ensure the Heartbeat sequence is running, the Startup Action of this device can be set to start this sequence. This means that the sequence will be running once this device has been powered up. In the event of power outage, the sequence will be resumed once the power is restored to this device. Certain source controllers require that this message is received regularly within a certain time. Failure

to receive the message causes the dimmer to output the SYSTEM_FAIL scene (scene 128).

Alternatively, the Heartbeat sequence can be triggered manually by sending a Start Sequence message from any input. Configuring Heartbeat Timeout The Heartbeat Timeout in the SCMD4 should be set to be a longer period than the interval used in the sequence. For example, if the heartbeat message is broadcast every 30 seconds, a timeout of 91 seconds will cause the SCMD4 to respond if it fails to receive three instances of the message in a row.




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On networks with high traffic, a combination of more frequent broadcasts of the heartbeat message and a timeout period several times longer than the broadcast interval is recommended to ensure that the device is not overly sensitive to any missed messages and only responds with a genuine lack of communication.

Documents

SCMD4 Programming Guide FINAL DRAFT - iLight series SCMD4 Programming Guide Rev1 Jun17 Contents ... • Data transmission speed 1,200 Baud ... combined with an LED …