CompactBlock I/O for PROFIBUS DP - Rockwell Automationliterature.rockwellautomation.com/idc/groups/literature/documents/... · CompactBlock I/O for PROFIBUS DP Base Modules and DeviceNet

CompactBlock I/O for PROFIBUS DP1791P-16B0, 1791P-0B16P, 1791P-8B8P, 1791P-4B4P, 1791P-8V8P

Technical Data

1791P CompactBlock™ I/O modules are stand-alone 24V dc Block I/O products that communicate via a PROFIBUS DP link. Each PROFIBUS DP node consists of either one base module or one base module and one expansion module. Any expansion module can be coupled with any base module. CompactBlock 1791P consists of only base modules. The expansion modules are part of the CompactBlock 1791D family of products. CompactBlock PROFIBUS DP modules must be installed in a secondary enclosure. Base modules are equipped with 8 to 16 points. CompactBlock PROFIBUS DP provides sinking and sourcing inputs and outputs. Sinking inputs are 24V dc NEMA Type 3 compatible. Self-protected 24V dc outputs can provide up to 0.5 amp each.

CompactBlock I/O for PROFIBUS DP Base Modules and DeviceNet Expansion Modules

• 4 sinking input 4 sourcing output base module (1791P-4B4P)

• 8 sinking input/ 8 sourcing output base module (1791P-8B8P)

• 8 sourcing input/ 8 sinking output base module (1791P-8V8P)

• 16 sinking input base module (1791P-16B0)

• 16 sourcing output base module (1791P-0B16P)

• 16 sinking input expansion module (1791D-16B0X)

• 16 sourcing input expansion module (1791D-16V0X)

• 16 sourcing output expansion module (1791D-0B16PX)

• 16 sinking output expansion module (1791D-0V16PX)

2 Overview CompactBlock I/O for PROFIBUS DP

Important User Information Because of the variety of uses for the products described in this publication, those responsible for the application and use of these products must satisfy themselves that all necessary steps have been taken to assure that each application and use meets all performance and safety requirements, including any applicable laws, regulations, codes and standards. In no event will Rockwell Automation be responsible or liable for indirect or consequential damage resulting from the use or application of these products.

Any illustrations, charts, sample programs, and layout examples shown in this publication are intended solely for purposes of example. Since there are many variables and requirements associated with any particular installation, Rockwell Automation does not assume responsibility or liability (to include intellectual property liability) for actual use based upon the examples shown in this publication.

Allen-BradleyTM publication SGI-1.1, Safety Guidelines for the Application, Installation and Maintenance of Solid-State Control (available from your local Allen-Bradley office), describes some important differences between solid-state equipment and electromechanical devices that should be taken into consideration when applying products such as those described in this publication.

Reproduction of the contents of this copyrighted publication, in whole or part, without written permission of Rockwell Automation, is prohibited.

Publication 1791P-TD001B-EP - October 2002

CompactBlock I/O for PROFIBUS DP Overview 3

Overview CompactBlock I/O for PROFIBUS DP blocks are compatible with any PROFIBUS DP scanner.

To set the station address, lift the door containing the status LEDs on the top left side of the module. Adjust the switches located behind the door.

Benefits

• Base blocks have a built-in PROFIBUS adapter• Use GSD files to connect and configure• PROIFBUS DP conformance tested means high level of

interoperability with other PROFIBUS products• Mounts horizontally or vertically on DIN rail• cUL Listed, CE certified• Address switches and auto baud ease network commissioning• Hardware watchdog function secures state of I/O in case of failure• IEC/NEMA Type 3+ inputs offers widest range of compatible

sensors

Typical Configuration This illustration shows how CompactBlock I/O fits into a typical PROFIBUS system.

StatusNetwork

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

CompactBlock I/O1791P-8V8P

8 INPUTS / 8 OUTPUTS - DC POWER

Allen-Bradley

Profibus DP

Module

Status

5 6 7

CompactBlock I/O1791R-8V8P


5 6 7



5 6 7



5 6 7



5 6 7



EXPANSION UNIT CompactCompactBlock LDX

PULLPULL PULLPULL

EXPANSION UNIT CompactCompactBlock LDX

PULLPULL PULLPULL

EXPANSION UNITANSION UNIT CompactCompactBlocBlock LDXk LDX

PULLPULL PULLPULLPULLPULL

43323

Personal Computer with configuration software

Sensor HMI

PLC-5 or other programmable controller

PowerFlex™ Drive

Interface

FlexArmor™

PROFIBUS Scanner

SLC or other controller

Field DeviceSensor

HMI

FLEX I/O™

1790P CompactBlock LDX I/O

Transmitter

ControlLogix™ or other programmable controller

PROFIBUS Scanner

Point I/O™

1791P CompactBlock I/O



System Compatibility CompactBlock I/O modules are compatible with any PROFIBUS DP scanner.

CompactBlock I/Oon PROFIBUS DP

Optimized for high speed and inexpensive installation, PROFIBUS DP (decentralized periphery) is designed especially for communication between programmable controllers (PLCs) and distributed I/O at the device level. Data exchange is mainly cyclic with field devices such as I/O, valves, drives and measuring transducers. The primary controller (master) reads the input information from the field devices (slaves) and sends the output information back to the slaves.The communication functions required for this are highlighted in the following table and are defined by the PROFIBUS standard.

Basic DP Functions

Data communication is monitored on both the master and slave sides.

Speed

PROFIBUS DP requires about 1 msec at 12 Mbit/sec to transmit 512 bits of input data and 512 bits of output data to 32 stations.

Bus Access • Token passing procedure between masters and master-slave procedure between master and slaves

• Mono-master or multi-master system possible• Master and slave devices, maximum 126 stations on one bus

Communication • Peer-to-peer (user data communication) or multicast (control commands)• Cyclic master-slave user data communication

Operating States • Operate - cyclic transmission of input and output data• Clear - inputs are read, outputs remain in secure state• Stop - diagnostics and parameterization, no user data transmission

Synchronization • Control commands allow the synchronization of inputs and outputs• Sync mode - outputs are synchronized• Freeze mode - inputs are synchronized

Functions • Cyclic user data transfer between DP master and slave• Dynamic activation or deactivation of individual slaves• Checking the configuration of the slaves• Powerful diagnostic functions, 3 hierarchical levels of diagnostic messages• Synchronization of input and/or outputs• Address assignment for slaves optionally possible via the bus• Maximum of 244 bytes input and output data possible for each slave

Protective Functions

• All messages are transmitted at a hamming distance of HD=4• Watchdog control of DP slave detects failure of the assigned master• Access protection for inputs/outputs of slaves• Monitoring of user data communication with adjustable monitoring timer

in the master

Device Types • DP master Class 2 (DPM2), e.g., engineering or diagnostics tool• DP master Class 1 (DPM1), e.g., central programmable controllers such as

PLC, SLC, PC• DP slave e.g., devices with binary or analog inputs/outputs, drives, valves



Diagnostics

Diagnostic messages are transmitted over the network and collected at the master and are classified into three types:• Station-related - status of the device (for example, low voltage or

over temperature, depending on the device).• Module-related - indicates if any of the connected I/O modules

report errors. More detailed information of the error can be found by evaluating the channel-related diagnostic message.

• Channel-related - provides information on channel errors of the I/O modules and expands on the module-related diagnostics.

System Configuration and Devices Types

PROFIBUS DP consists of mono-master or multi-master systems. This allows flexibility during system configuration. A maximum of 126 master or slave devices can connect to one network. System configuration specifications define:• the number of stations• assignment of station addresses to the I/O addresses• data consistency of the I/O data• format of the diagnostic messages• bus parametersEach PROFIBUS DP system consists of three different types of devices:

DP Master Class 1 (DPM1) - this is a central controller which cyclically exchanges information with the distributed stations (slaves) in a defined message cycle. This device is typically the PLC.DP Master Class 2 (DPM2) - this is a configuration or operating device used for commissioning, maintenance or diagnostics. It also evaluates measured values and parameters and request device status. This device is typically the scanner or adapter.Slave - this is a peripheral I/O field device such as an HMI, drive, relay or sensor. Depending on the type, the slave device collects input information and sends output information to the peripherals.The maximum amount of input and output information is 244 bytes of input and 244 bytes of output.

Mono-master systems contain only one PLC on the network.The field devices are decentrally linked to the PLC via the transmission medium. These systems offer the shortest communication time.Multi-master systems contain several PLCs on one network.This system can be configured either with independent subsystems each consisting of one DPM1 master and its assigned slaves, or with additional configuration and diagnostic devices. Input and output information of the slaves can be read by all masters, however only one master can write-access the outputs.



Operating Modes and System Status

Sync/Freeze

In addition to the cyclic data exchange which is executed automatically by the master, the master can send control commands to a single slave, a group of slaves or all slave simultaneously.These control commands are transmitted as multicast commands and permit use of sync and freeze modes for event-controlled synchronization of the slaves.The slave begins sync mode when it receives a sync command from the assigned master. The output channels of all I/O modules are then frozen in their current state. During subsequent user data transmission, the output data is stored in the scanner, but the output states remain unchanged. The stored output data is not sent to the outputs until the sync command is received. Sync mode is concluded with the unsync command.Similarly, a freeze control command causes the adapter to assume freeze mode. In this operating mode, the states of the input channels of all I/O modules are frozen at the current value. Input data is not updated again until the master sends the next freeze command. Freeze is concluded with the unfreeze command.General system behavior is determined by the operating status of the master. The three main states are:• Stop - no data transmission occurs between the master and the

slaves.• Operate - the master is in the data transfer phase. In cyclic data

communication, inputs of the slaves are read and output information is written to the slaves.

• Clear - the master reads the information of the slaves and sets the outputs to an idle state.

The system reaction to an error during the data transfer phase of the master (such as slave failure) is determined by the auto clear configuration parameter. If this parameter is set to true, the master switches the outputs of all assigned slaves to fail-safe state as soon as a slave is no longer ready for user data transmission. The master then changes to the clear state. If this parameter is false, the master remains in operate state even when a fault occurs with the user specifying the proper system reaction.

Cyclic Data Transmission

Data transmission between the master and its slaves is executed automatically by the master in a defined, recurring order.When configuring the network, the user defines the assignment of a slave to the master. At this time, the user also defines which slaves are to be included or excluded from the cyclic user data communication.



This transmission of data is divided into three categories:• parameterization• configuration• data transferBefore a slave enters the data transfer phase, it is checked in the parameterization and configuration phases to determine whether the planned configuration matches the actual device configuration.During this check, the device type, format and length information and the number of inputs and outputs must agree. These checks offer reliable protection against parameterization errors. In addition to the user data transfer which is executed automatically by the master, new parameterization data can be sent to the slaves at the user’s request.

Configuration and GSD File Requirements

You can configure CompactBlock I/O modules using GSD files and any PROFIBUS DP configuration package. The GSD files are available on-line at: www.ab.com/networks/gsd/

Status Indicators Each CompactBlock I/O module has indicators to provide a diagnostic readout.

Module Status Indicators

CompactBlock I/O 1791P-8V8P

8 INPUTS / 8 OUTPUTS . DC POWER

Status

Allen-Bradley

NetworkProfibus DP

01

23

45

67

01

23

45

67

Profibus DP

ModuleStatus

Network and Module Status

I/O Status

43313

Module Status Indicator

Indication: Status:

Off No power

Green Module operating correctly

Red Hardware or software error

Flashing Red Communication failure

Flashing Red/Orange

Expansion error



Network Status Indicators

I/O Status Indicators

PROFIBUS DP Terminal Connector

The terminal connector on the CompactBlock PROFIBUS module uses a female 9-pin D-sub connector as shown below.

Pin numbers, names and descriptions for the connector are listed in the table below.

Network Status Indicator

Indication: Status:

Off Network offline

Yellow Network online

I/O Status Indicators

Function Indicator Module Illumination Condition

Outputs Each output: Yellow

NoneYellow

Output not energizedOutput energized

Inputs Each Input: Yellow

NoneYellow

No valid inputValid input

CompactBlock I/O 1791P-8V8P

8 INPUTS / 8 OUTPUTS . DC POWER

Status

Allen-Bradley

NetworkProfibus DP

01

23

45

67

01

23

45

67

Profibus DP

ModuleStatus

31337-m

Pin Number: Name: Description:

1 shield Shield, Protective Ground

2 M24V Minus 24V Output Voltage (Not used)

3 RxD/TxD-P Receive/Transmit-Data-P

4 CNTR-P Control-p

5 DGND Data Ground

6 VP Voltage-Plus

7 P24V Plus 24V Output Voltage (Not used)

8 RxD/TxD-N Receive/Transmit-Data-N

9 CNTR-N Control-N (Not used)



Base Module to Expansion Interface

The base module is linked to the expansion module with an 8-bit parallel bus, control lines, Vcc and ground connections, a reset/initialization line, and an expansion presence line. The 8-bit bus is multiplexed so that 16 bits of data (1 for each I/O point) can be transmitted/received with two transfers. The reset/initialization line is used during initialization of the module. The presence line is used for the detection of an expansion module at power up and for a period of each data transfer. Module ID is read over this bus at power up.1791P modules supply expansion power via expansion bus as follows:

Power the Module Power requirements for the CompactBlock PROFIBUS module are illustrated below.

Expansion power voltage 5Vdc

Expansion power current 100mA

Module power connector

43108

Pin Number Name

1 Com (24V dc return)

2 Gnd (Field ground)

3 +24V dc

COMGND

+24V



Removable Terminal Block The CompactBlock PROFIBUS module contains a removable terminal block as shown below.

Mount the Module(s) Most base and expansion modules mount to a panel or DIN rail. The panel or DIN rail must be grounded before installing the module(s).

Base Module Mounting

You can install the CompactBlock base module on a panel or DIN rail, as illustrated to the left.

VDC

VDC

GND

GNDNotUsed

IN0IN2

IN4IN6

IN7IN5

IN3IN1

IN8IN10 IN12 IN14

IN15

IN13

IN11

IN9

Status

NetworkProfibus DP

01

23

45

67

01

23

45

67

ModuleStatus

Profibus DP

Retaining Screw

Retaining Screw

43111

StatusNetwork

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

CompactBlock I/OAllen-Bradley

Module

Status

Panel mount - front view

DIN rail mount- side view

Use a standard screwdriverto pull down the locking tab,then push the module ontothe DIN rail.

IMPORTANT Currently, these expansion blocks must be DIN rail mounted to meet our specifications:

• 1791D-16B0X• 1791D-16V0X• 1791D-0B16PX• 1791D-0V16PX

These expansion blocks cannot be panel mounted.



Expansion Module to Base Module Connection

The base module connects to the expansion module as illustrated below.

Profibus DP

NetworkStatus

0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7



Allen-Bradley

Module

Status

Base Module Expansion Module

141 mm 5.55 in

41 mm 1.6 in

104 mm 4.09 in

41 mm 1.6 in

25 mm1 in

Expansion covers 43116

StatusNetwork

Profibus DP

Module

Status

0 1 2 3 4 5 6 7



Allen-Bradley

0 1 2 3 4 5 6 7

Red strip must be on top of ribbon cable

A longer ribbon cable, 1791D-15CMCBL, lets you have 1 cm to 7 cm of space between modules.

43117



Word/Bit Definitions

The following table lists the combination of input and output modules and the input and output bytes produced and consumed.

Detailed Module Information The remainder of this publication describes detailed information for each CompactBlock I/O PROFIBUS module, such as:

• schematic diagrams• connection wiring diagrams• specificationsRefer to the table below to find information about a specific module.

Related Publication For installation instructions for the CompactBlock PROFIBUS module, refer to the Distributed I/O on PROFIBUS DP installation instructions, publication number, 1791P-IN001.

Base Expansion I/O Points Produced (input bytes)

Consumed (output bytes)

16 input 16 in 2 0

16 output 16 out 0 2

8 in / 8 out 8 in / 8 out 1 1

4 in / 4 out 4 in / 4 out 1 1

16 input 16 input 32 input 4 0

16 input 16 output 16 in / 16 out 2 2

16 output 16 input 16 in / 16 out 2 2

16 output 16 output 32 out 0 4

8 in / 8 out 16 input 24 in /8 out 3 1

8 in / 8 out 16 output 8 in / 24 out 1 3

4 in / 4 out 16 input 20 in / 4 out 3 1

4 in / 4 out 16 output 4 in / 20 out 1 3

For information about: See page:PROFIBUS DP Base and Expansion Terminal Modules

PROFIBUS Base and Expansion Modules General Specifications 13

24V DC, Sinking Input Base 1791P-16B0 and Expansion Modules 14

24V DC, 16 Sourcing Output Base 1791P-0B16P and Expansion Modules 15

24V DC, 8 Sinking Input Base/ 8 Sourcing Output 1791P-8B8P and Expansion Modules 16

24V DC, 4 Sinking Input Base/ 4 Sourcing Output 1791P-4B4P and Expansion Modules 17

24V DC, 8 Sourcing Input Base/ 8 Sinking Output 1791P-8V8P and Expansion Modules 18

16 sinking input expansion module (1791D-16B0X) 19

16 sourcing input expansion module (1791D-16V0X) 20

16 sourcing output expansion module (1791D-0B16PX) 21

16 sourcing output expansion module (1791D-0V16PX) 22


CompactBlock Distributed I/O on PROFIBUS DP PROFIBUS Base and Expansion Modules 13

PROFIBUS Base and Expansion ModulesGeneral SpecificationsThe following table contains specifications that are common to all of the PROFIBUS base and expansion modules in this section. Individual module connection sizes, word/bit definitions, schematics, wiring diagrams and specifications are detailed after this table.

PROFIBUS DP Specifications

Network Protocol PROFIBUS-DP (EN50170)•Communication of the slave with a Class 1 master•Communication of the slave with a Class 2 master

Redundancy Not supported

Repeater Control Signal RS485 signal

Implementation Type DPC31

Freeze Mode Supported

Sync Mode Supported

Auto Baud Rate Supported

Fail Safe Mode Supported1

Station Type Slave

FMS Support Not supported

Number of nodes 125 maximum

Network Length/Communication rate

9.6KBPS @ 1000m (3280ft)19.2KBPS @ 1000m (3280ft)45.45KBPS @ 1000m (3280ft)93.75KBPS @ 1000m (3280ft)187.5KBPS @ 1000m (3280ft)500KBPS @ 400m (1312ft)3MBPS @ 100m (328ft)6MBPS @ 100m (328ft)12MBPS @ 100m (328ft)

General Specifications

Indicators Module status - red/green/orangeNetwork status - yellowI/O status - yellow

IsolationAuxiliary I/O power to PROFIBUSI/O group-to-groupI/O group-to-PROFIBUS

Type tested to 500V ac for 60 seconds

Type tested to 500V ac for 60 secondsType tested to 500V ac for 60 seconds

PROFIBUS DP Power VoltageCurrent

18 - 26.4V dc250mA maximum (with expansion)

Expansion Power VoltageCurrent

5V dc100mA

Auxiliary Power InputsVoltageCurrent

10-30V dc88mA each group of 8

Auxiliary Power OutputsVoltageCurrent

10-30V dc4A each group of 8

Base Module Dimensions 150mm X 50mm X 38mm5.91in X 1.97in X 1.5in

Expansion Module Dimensions

115mm X 50mm X 38mm4.4in X 1.97in X 1.5in

Operating Temperature IEC 60068-2-1 (Test Ad, Operating Cold),IEC 60068-2-2 (Test Bd, Operating Dry Heat),IEC 60068-2-14 (Test Nb, Operating Thermal Shock):0 to 60°C (32 to 140°F)

General Specifications (continued)

Field Wiring Tightening Torque 5-7lb-in. (0.5-0.6 Nm)

Storage Temperature IEC 60068-2-1 (Test Ab, Un-packaged Non-operating Cold),IEC 60068-2-2 (Test Bb, Un-packaged Non-operating Dry Heat),IEC 60068-2-14 (Test Na, Un-packaged Non-operating Thermal Shock):–40 to 85°C (–40 to 185°F)

Relative Humidity IEC 60068-2-30 (Test Db, Un-packaged Non-operating Damp Heat):5-95% non-condensing

Shock IEC60068-2-27 (Test Ea, Unpackaged Shock):Operating 30gNon-operating 50g

Vibration IEC60068-2-6 (Test Fc, Operating):5g @ 10-500Hz

Conductors Wire Size

Category

14 gauge (2mm2) stranded maximum3/64 inch insulation maximum22, 3

ESD Immunity IEC 61000-4-2:6kV contact discharge8kV air discharge

Radiated RF Immunity IEC 61000-4-3:10V/m with 1kHz sine-wave 80%AM from 80MHz to 1000MHz10V/m with 200Hz 50% Pulse 100%AM at 900Mhz

EFT/B Immunity IEC 61000-4-4:±2kV at 5kHz on signal ports±2kV at 5kHz on communications ports

Surge Transient Immunity IEC 61000-4-5:±1kV line-line(DM) and ±2kV line-earth(CM) on signal ports±2kV line-earth(CM) on shielded ports

Conducted RF Immunity IEC 61000-4-6:10Vrms with 1kHz sine-wave 80%AM from 150kHz to 80MHz

Emissions CSPR 11:Group 1, Class A

Enclosure Meets IP20

Certifications:(when product is marked)

c-UL-us UL Listed Industrial Control Equipment, certified for US and Canadac-UL-us UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations, certified for U.S. and CanadaCE4 European Union 89/336/EEC EMC Directive, compliant with:

EN 50081-2; Industrial EmissionsEN 50082-2; Industrial ImmunityEN 61326; Meas./Control/Lab., Industrial Requirements61000-6-2; Industrial Immunity

C-Tick4 Australian Radiocommunications Act, compliant with:

AS/NZS 2064; Industrial Emissions

1. Dependant upon the scanner module being used. For example, the SST Scanner (cat. no. SST-PFB-SLC) does not fully support Fail Safe Mode, as it only resets outputs to 0. You cannot define behavior such as Hold Last State or Fault Value with the SST scanner.

2. You use this conductor category information for planning conductor routing as described in the system level installation manual.

3. See pub. 1770-4.1, Programmable Controller Wiring and Grounding Guidelines4. See the Product Certification link at www.ab.com for Declarations of Conformity,

Certificates, and other certification details.

Publication 1791P-TD001B-EN-P - October 2002

14 PROFIBUS Base and Expansion Modules CompactBlock Distributed I/O on PROFIBUS DP

24V DC 16 Sinking Input Base 1791P-16B0 and Expansion Modules

Wiring Diagram for 1791P-16B0 and 1791D-16BOX

1791P-16B0 Images Specifications

+

_

Input

24V dc

GND

System Circuitry

OptoIsolation

Input Indication LED (Logic)

42501

Simplified Schematic

1791P-16B0 Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8

1791P-16B0 and 1791D-0B16PX or -OV16PX Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8

1791P-16B0 and 1791D-0B16PX or -OV16PX Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8

GND

IN 0 IN 2

+

IN 8IN 6

IN 1 IN 3

IN 4

IN 5 IN 7

IN 10

IN 9

IN 12 IN 14

IN 11 IN 15IN 13GND

-

VDC VDCNot Used

41671

1791P-16B0 and 1791D-16B0X or -16V0X Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8

2 I23 I22 I21 I20 I19 I18 I17 I16

3 I31 I30 I29 I28 I27 I26 I25 I24

Sinking Input Specifications

Inputs per block groups of 4 or 8

Off-state Voltage 5V dc maximum

On-state Voltage 30V dc @ 40°C maximum25V dc @ 60°C maximum10V dc minimum

Off-state Current 1.5mA minimum

On-state Current 11mA @ 30V dc maximum2mA @ 10V dc minimum



24V DC 16 Sourcing Output Base 1791P-0B16P and Expansion Modules

Wiring Diagram for 1791P-0B16P and 1791D-0B16PX

1791P-0B16P ImagesSpecifications

+

–

42502

Load

24V dc

GND

System Circuitry

OptoIsolation

Output Indication LED (Logic)

Output

V dc

Protected OutputDevice


1791P-0B16P Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8

1791P-0B16P and 1791D-16B0X or -16V0X Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8

1791P-0B16P and 1791D-16B0X or -16V0X Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8

VDC

GND

OUT 0 OUT 2

+

OUT 8OUT 6

OUT 1 OUT 3

OUT 4

OUT 5 OUT 7

OUT 10

OUT 9

OUT 12OUT 14

OUT 11 OUT 15OUT 13

VDC

GND

-

Load

Not Used

41669

1791P-0B16P and 1791D-0B16PX or -0V16PX Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8

2 O23 O22 O21 O20 O19 O18 O17 O16

3 O31 O30 O29 O28 O27 O26 O25 O24

Sourcing Output Specifications

Outputs per block groups of 4 or 8

On-state Voltage Range 10 - 30V dc

On-state Voltage Drop 0.5V dc @ rated current

On-state Current 0.5A maximum

Off-state Leakage 1.0mA maximum

Module Current (per output) 0.5A maximum

Surge Current - for 10 mSrepeatable every 2 S

1.0A maximum



24V DC 8 Sinking Input /8 Sourcing Output Base - 1791P-8B8P and Expansion Modules

Wiring Diagram for 1791P-8B8P

1791P-8B8P Images

Specifications

+

_

+

–

Input Simplified Schematic

42500

Load24V dc

System Circuitry

OptoIsolation


Input

V dc


OptoIsolation

System Circuitry 24V dc

Output

V dc

Gnd

Output Simplified Schematic


1791P-8B8P Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1791P-8B8POutput Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0


ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8

2 I23 I22 I21 I20 I19 I18 I17 I16

1791P-8B8Pand 1791D-16B0X or -16V0X Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

VDC

GND

IN 0 IN 2

+

OUT 0IN 6

IN 1 IN 3

IN 4

IN 5 IN 7

OUT 2

OUT 1

OUT 4 OUT 6

OUT 7OUT 5

VDC

GND

-+

-Load

Not Used

OUT 3

41672

1791P-8B8P and 1791D-OB16PX or -OV16PX Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1791P-8B8P and 1791D-0B16PX or -0V16PX Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8

2 O23 O22 O21 O20 O19 O18 O17 O16













Module Current (per output)

0.5A maximum


1.0A maximum



24V DC 4 Sinking Input /4 Sourcing Output Base - 1791P-4B4P and Expansion Modules

Wiring Diagram for 1791P-4B4P

791P-4B4P Images

Specifications

+

_

+

–


42500

Load24V dc

System Circuitry

OptoIsolation


Input

V dc


OptoIsolation

System Circuitry 24V dc

Output

V dc

Gnd



1791P-4B4P Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 Reserved I3 I2 I1 I0

1791P-4B4P Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 Reserved O3 O2 O1 O0


ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8


1791P-4B4Pand 1791D-16B0X or -16V0X Output Image

ByteBit Position

7 6 5 4 3 2 1 0


IN 0 VDC OUT 0VDC

IN 1 VDC

IN 2

IN 3 VDC

GND

OUT 1

OUT 2 GND

GND GNDOUT 3

VDC VDC

GND GND

Not Used

Load+

-

+

-42344

1791P-4B4P and 1791D-OB16PX or -OV16PX Input Image

ByteBit Position

7 6 5 4 3 2 1 0


1791P-4B4V and 1791D-0B16PX or -0V16PX Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8


Sourcing Input Specifications






Sinking Output Specifications







0.5A maximum


1.0A maximum



24V DC 8 Sourcing Input /8 Sinking Output Base - 1791P-8V8P and Expansion Modules

Wiring Diagram for 1791P-8V8P

1791P-8V8P Images

Specifications

+

_

+

–


Output24V dc

Load

Opto Isolation

System Circuitry


V dc

Protected Output Device

Gnd


Input

24V dc

Opto Isolation

System Circuitry


V dc

42500

1791P-8V8P Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1791P-8V8POutput Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1791P-8V8P and 1791D-16B0X or -16V0X Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1 I15 I14 I13 I12 I11 I10 I9 I8

2 I23 I22 I21 I20 I19 I18 I17 I16

1791P-8V8Pand 1791D-16B0X or -16V0X Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

IN 0 IN 2 OUT 0IN 6

IN 1 IN 3

IN 4

IN 5 IN 7

OUT 2

OUT 1

OUT 4 OUT 6

OUT 3 OUT 7OUT 5

VDC VDC

GND GND

Not Used

Load+

- +

-

42346

1791P-8V8P and 1791D-OB16PX or -OV16PX Input Image

ByteBit Position

7 6 5 4 3 2 1 0

0 I7 I6 I5 I4 I3 I2 I1 I0

1791P-8V8P and 1791D-0B16PX or -0V16PX Output Image

ByteBit Position

7 6 5 4 3 2 1 0

0 O7 O6 O5 O4 O3 O2 O1 O0

1 O15 O14 O13 O12 O11 O10 O9 O8

2 O23 O22 O21 O20 O19 O18 O17 O16














0.5A maximum


1.0A maximum



16 Sinking Input Expansion Module 1791D-16B0X

The 1791D-16BOX CompactBlock expansion module I/O can be used with the 1791 Remote I/O modules.

Wiring Connections

Input Wiring Diagram for 1791D-16B0X Expansion Module

Specifications

+

_


Input

24V dc

OptoIsolation

System Circuitry


GND42501

GND

IN 0 IN 2 IN 8IN 6

IN 1 IN 3

IN 4

IN 5 IN 7

IN 10

IN 9

IN 12 IN 14

IN 11 IN 15IN 13GND

VDC VDCNot

Used

41671

Sinking Inputs Specifications

Inputs per Block 2 groups of 8

Off-state Voltage 5V dc

On-state Voltage 30V dc @ 40°C 24V dc @ 60°C 10V dc minimum

Off-state Current 1.5mA @ 5V dc

On-state Current 11mA @ 30V dc



16 Sourcing Input Expansion Module 1791D-16V0X

The 1791D-16VOX CompactBlock expansion module I/O can be used with the 1791 Remote I/O modules.

Wiring Connections

Input Wiring Diagram for 1791D-16V0X Expansion Module

Specifications


Input

24V dc

+

_

OptoIsolation

System Circuitry


V dc

41886

VDC

GND

IN 0 IN 2 IN 8IN 6

IN 1 IN 3

IN 4

IN 5 IN 7

IN 10

IN 9

IN 12 IN 14

IN 11 IN 15IN 13

VDC

GND

41670

Not Used

Sourcing Inputs Specifications

Inputs per Block 2 groups of 8

Off-state Voltage 5V dc

On-state Voltage 30V dc @ 40°C 24V dc @ 60°C 10V dc minimum

Off-state Current 1.5mA @ 5V dc

On-state Current 11mA @ 30V dc



16 Sourcing Output Expansion Module 1791D-0B16PX

The 1791D-0B16PX CompactBlock expansion module I/O can be used with the 1791 Remote I/O modules.

Wiring Connections

Output Wiring Diagram for 1791D-0B16PXExpansion Module

Specifications

+

–


Output24V dc

Load

OptoIsolation

System Circuitry


V dc


Gnd 42502

VDC

GND

OUT 0 OUT 2 OUT 8OUT 6

OUT 1 OUT 3

OUT 4

OUT 5 OUT 7

OUT 10

OUT 9

OUT 12 OUT 14

OUT 11 OUT 15OUT 13

VDC

GND

Load

Not Used

41669

+

_

Sourcing Outputs Specifications

Outputs per Block 2 groups of 8





Module Current (all outputs) 4.0A maximum

Surge Current - for 10ms, repeatable every 2 s

1.0A maximum



16 Sinking Output Expansion Module 1791D-0V16PX

The 1791D-0V16PX CompactBlock expansion module I/O can be used with the 1791 Remote I/O modules.

Wiring Connections

Output Wiring Diagram for 1791D-0V16PXExpansion Module

Specifications

+

_


Output

24V dc

Load

OptoIsolation

System Circuitry


V dc


Gnd 42503

VDC

GND

OUT 0 OUT 2 OUT 8OUT 6

OUT 1 OUT 3

OUT 4

OUT 5 OUT 7

OUT 10

OUT 9

OUT 12 OUT 14

OUT 11 OUT 15OUT 13

VDC

Load

GND

Not Used

41726

Sinking Outputs Specifications

Outputs per Block 2 groups of 8





Module Current (all outputs) 4.0A maximum

Surge Current - for 10ms repeatable every 2 s

1.0A maximum


Publication 1791P-TD001B-EN-P - October 2002 2 PN 957707-92Supersedes Publication 1791P-TD001A-EN-P - June 2002 Copyright © 2002 Rockwell Automation, Inc. All rights reserved. Printed in the U.S.A

CompactBlock I/O, ControlLogix, PowerFlex, FlexArmor, FLEX I/O, and Point I/O are trademarks of Rockwell Automation, Inc.

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