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modbus for et200s

12/1/2012 8:09 PM	Rate (0)
KRK_1986 Posts: 62 Rating: (0)	Hi experts, I am using IM151-8 PN/DP cpu and for modmus master , i am going to use 6ES7138-4DF11-0AB0 module. i didnt done modbus concept before... i think our plc wll be the master and slave is energy meter(for example).so how many clients can able to communicate with my master??? and how to differentiate the client in program? how to addrees this in im151-8 pn/dp? experts can u help me to make a modbus connection. thanks krk
KRK_1986 Posts: 62 Rating: (0)
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12/1/2012 8:43 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 3/21/2025 Posts: 12344 Rating: (2707)	Hello KRK; For anyone who needs to understand the basics of Modbus communications before programming a master or a slave in Siemens software, I highly recommend our friend smiffy's very clear post ion the subject: Modbus General Description Then have a look at the following manual and sample program: SIMATIC ET 200S Serial interface modules Sample et200s 1si Modbus master. Hope this helps, Daniel Chartier

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12/3/2012 10:04 AM	Rate (0)
KRK_1986 Posts: 62 Rating: (0)	Thank you very much for your useful attachements thanks krk
KRK_1986 Posts: 62 Rating: (0)
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