146 73EMDX³ AMC

N29

2514

/00

GB

Module with RS485 communication option for 146 69

146 73 - Ref.: N9514/00 GB

146 73 - Ref.: N9514/00 GB

PRELIMINARY OPERATIONS _______________________________________________ 4 GENERAL INFORMATION ______________________________________________ 4INSTALLATION ____________________________________________________________ 5 CONNECTION ________________________________________________________ 5PROGRAMMING ___________________________________________________________ 6 ACCESS TO pROGRAMMING MOdE ____________________________________ 7 COMMUNICATION AddRESS __________________________________________ 8 COMMUNICATION SpEEd _____________________________________________ 8 COMMUNICATION pARITY _____________________________________________ 9 COMMUNICATION STOp BIT ___________________________________________ 9 QUIT pROGRAMMING ________________________________________________ 10COMMUNICATION ________________________________________________________ 11TECHNICAL CHARACTERISTICS __________________________________________ 13GLOSSARY OF ABBREVIATIONS __________________________________________ 14

Con

tent

s

GB

4 146 73 - Ref.: N9514/00 GB

FunctionsThe optional RS485 Communication module must be connected to the 146 69 product. It provides an RS485 serial link ( or wires) with JBUS/MOdBUS® protocol for the use of 146 69 product from a pC or pLC.

General pointsIn a standard configuration, anRS485 link canbeused to connect thirty one 146 69 product units or anyotherproductcommunicatingwithaPCorPLCoveradistanceof1500metresandusingtheJBUS/MOdBUS® protocol.

N 1 N 2 N n

PC

≤ 1200 m max. 31 product

R=120Ω

146 69product

146 69product

146 69product

RS485 R=120Ω

dIR

IS 1

09 E

F

General information

For personnel and product safety please read the contents of these operating instructions carefullybeforeconnecting.Checkthefollowingpointsassoonasyoureceivethe146 69 productpackage:•thepackingisingoodcondition,

•theproducthasnotbeendamagedduringtrans-port,

• the product reference number is conform to your order,

•thepackagecontainstheproductandtheoperatinginstructions.

Recommendations:You should use a shielded twisted pair (LIYCY type). In a disturbed environment or large network (in terms of length) we recommend the use of a shield-ed twisted pair (type LIYCY-CY).A repeater (1 channel) or an arrestor (4 channels) should be used if you intend to exceed the dis-tance (1200 m) and/or maximum number (31) of 146 69 product. Please contact us for more infor-mation.

NB :A 120 ohm resistance (found on the additional module) must be fixed at both ends of the link. Other solutions are available (modem, TCP-IP, optical fibre, etc.). Please contact us.

146 73Preliminary oPerations

5146 73 - Ref.: N9514/00 GB

GB

Themoduleisfittedontothebackofthe146 69 product in one of the 4 positions provided.

dIR

IS

4 A

dIR

IS

47 A

dIR

IS

4 A

ÇFix the module in one of the four positions.

É

Å

ÑFollowindicationswhenconnectingtheterminal.Switchonvoltagesupply.

The 146 69 product must be switched off

NO

1

- <=> A+ <=> B

146 73installation

ConneCtion

146 73 - Ref.: N9514/00 GB

aCCess to ProGramminG mode (COdE 100)

146 73ProGramminG

x 13 sec

x 1

x 1

x 1confirm

7146 73 - Ref.: N9514/00 GB

GB

Previous menu

Following menu

p.8

p.8

p.9

p.9

146 73

ProGramminG

8 146 73 - Ref.: N9514/00 GB

CommuniCation address

> Example : COM ADR = 7

x 3

x 2

x 1confirm

CommuniCation sPeed

> Example : BDS = 19 200 bauds

146 73ProGramminG

x 1

x 1confirm

(x 1) 19200(x 2) 38400(x 3) 2400(x 4) 4800(x 5) 9600

9146 73 - Ref.: N9514/00 GB

GB

CommuniCation Parity

> Example : PAR = Even

CommuniCation stoP Bit

> Example : STOP = 2

146 73

ProGramminG

x 1

x 1 (Odd = odd parity)x 2 (Even = even parity)x 3 (No = without parity)

x 1

x 1confirm

x 1 (2 bits)x 2 (1 bits)

10 146 73 - Ref.: N9514/00 GB

to Quit ProGramminG

146 73ProGramminG

x 13 sec.

11146 73 - Ref.: N9514/00 GB

GB

The JBUS/MOdBUS® used by the 146 69 product involvesadialogueusingamaster-slavehierarchicalstructure.Therearetwopossibledialogues:• the master communicates with a slave (146 69 pro-

duct) and waits for its reply• the master communicates with all the slaves (146 69 product)withoutwaitingfortheirreply.

The mode of communication is the RTU (Remote Terminal Unit) using hexadecimal characters of atleast 8 bits.

AccordingtotheJBUS/MODBUS®protocol(RTU),thetimebetweencharactershastobelessthan1,5xthetime forasinglecharacter.The timebetweenmes-sageshastobelongerthan3,5xthetimeforasinglecharacter.Thefollowingfunctioncodesaredefined: 3 : to read n words (maximum 18). 6 : to write one word. 8 : todiagnoseexchangesbetweenthemasterandthe

slaveviameters1,3,4,5and6. 16 : to write n words (maximum 18).

NB:1 word <=> 2 octets <=> 16 bits2 words <=> 4 octets <=> 32 bits

When selecting slave address 0, a message is sent to all the instruments present on the network (only for functions 6 and 16).Comment :The response time (time out question/answer) is 250 ms maximum

the standard CommuniCations frame

Slave address Function code Address data CRC 1

The standard communications frame consists of:

146 73CommuniCation

1 146 73 - Ref.: N9514/00 GB

CommuniCation taBle

> The communication tables are available on the CD-Rom supplied with the RS485 JBUS/MODBUS® module for 146 69 product.

146 73CommuniCation

1146 73 - Ref.: N9514/00 GB

GB

CommuniCation

RS485 or wires half duplexprotocole JBUS/MOdBUS® protocol / RTU modeSpeed 400 to 8400 BaudsGalvanic insulation 4 kV

146 73teChniCal CharaCteristiCs

14 146 73 - Ref.: N9514/00 GB

COM Communication AdR Slave addressBdS Speed of communication in baudspAR Communication frame parityNO Without parityEven Even parityOdd Odd paritySTOp Frame-stop beep1 1 stop bit stop bits

146 73Glossary of aBBreviations

15146 73 - Ref.: N9514/00 GB

GB

146 73

notes