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