hello

I have cp341-1ch02.

and gimac-i( energy instrument meter from LS company)

I need to connect the cp with the instrument to read data as voltage,power, current .... ect.

how I do that?without dongle

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Split from Communication betwen CP341 and Telesis Marking Machine(TMC 420) via RS 485.

Hello alaa;

Th gimac-I website staes that it communicates over Modbus RTU.

Without dongle, you could try this application, provided by our friend TIB68:

MODBUS RTU MASTER FOR CP340/341/441-X (NO DONGLE REQUIRED)

However, the gimac-i manual provides no information on the Modbus mapping (internal registers of the unit).

GIMAC-i Manual (eng) - LSIS

This is somewhat important, as you must program the functions of the CP 341 to request specific data for your communicqtions. You should ask LSIS about that information.

Hope this helps,

Daniel Chartier

thanx for reply

LS company provides manual about modbus and address of registers as shown below:

http://www.lsis.com/support/download/?d1=A02&d2=003&d3=&p=P00103&t=3

Hello alaa;

Depending on your familiarity with Modbus RTU, this could now be relatively easy, with TIB68's program file as a basis.

Download and install his program blocks as described, configure the gimac-i as a Modbus RTU slave, configure the CP 341 as a Modbus RTU maser and match baudrate and comm parameters with the slave's, then use the mapping provided by LS to request the values you need for your application.

If you need a refresher on Modbus RTU programming I can always suggest you have  a look at this very instructive document from our friend smiffy. I recpommend it highly!

Modbus General Description

Hope this helps,

Daniel Chartier

hello

I read manules about MODBUS\RTU .here useful link explain the process step by step

http://www.simplymodbus.ca/SimplyModbusMaster7.1.2Install.zip

but when I try use it in simatic manger I faced some problems

if I have 4 slaves every one of them has 16 request the total 64

what the relation between slaves and no. of cp address(256-271)

;

hello

I did as you wrote and I got the status code (E006h)

also all led off

and the settings :

1-BPS=9600

2-Address =1

3-Swap=off

4-pin 4 in cp=RA

5-pin 11 in cp =RB

hi alaaproject

can you provide what is the correct connection?

thanks

alaaproject

hello

I did as you wrote and I got the status code (E006h)

also all led off

and the settings :

1-BPS=9600

2-Address =1

3-Swap=off

4-pin 4 in cp=RA

5-pin 11 in cp =RB