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S7 1217C modbus TCP client

Created by: Sam.Valiahdi at: 9/5/2018 9:30 AM (11 Replies)

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12 Entries

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9/5/2018 9:30 AM	Rate (0)
Sam.Valiahdi Posts: 8 Rating: (0)	Dear Sir, I want to config my S7 1217C as modbus tcp client to read slave device! I simulate the slave device with modbus slave tool! I checked all documents and movies about it and set it up and every things looks good but nothing read! I dont know what can be problem?! Would you please kindly check my photos and let me know what else need to be check?! Regards, Sam Attachment Screenshot.zip (216 Downloads)
Sam.Valiahdi Posts: 8 Rating: (0)
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9/5/2018 10:11 AM	Rate (0)
Jay. Posts: 1283 Rating: (105)	What is the status when the REQ is TRUE?. In your screenshot couldn't see any error. Just status is 7002. Thanks, Jay Sam.Valiahdi Dear Sir, I want to config my S7 1217C as modbus tcp client to read slave device! I simulate the slave device with modbus slave tool! I checked all documents and movies about it and set it up and every things looks good but nothing read! I dont know what can be problem?! Would you please kindly check my photos and let me know what else need to be check?! Regards, Sam
Jay. Posts: 1283 Rating: (105)
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9/5/2018 10:13 AM	Rate (2)
Kaulquappe Posts: 3093 Rating: (324)	Hello Sam, you must evaluate the outputs of MB_CLIENT in your program. Save STATUS when ERROR=TRUE. Does the firewall of the PC with the slave software block port 502? Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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This contribution was helpful to 1 thankful Users Duris_I

9/5/2018 11:27 AM	Rate (0)
Sam.Valiahdi Posts: 8 Rating: (0)	Dear Sir, There is not any error! the status is 7002 with no error. I checked the firewall and it's Ok. Let me tell you a note, may it help! When I config my S7 as modbus tcp server it works perfectly but when I set it up as client it's not working ! I dont know if there is some special setting require by PLC Hardware to check or not!
Sam.Valiahdi Posts: 8 Rating: (0)
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9/5/2018 11:30 AM	Rate (0)
Sam.Valiahdi Posts: 8 Rating: (0)	the status is always 7002 without error! REQ is turning on and off continuously and no error is on status!
Sam.Valiahdi Posts: 8 Rating: (0)
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9/5/2018 11:43 AM	Rate (1)
Jay. Posts: 1283 Rating: (105)	Did you also set the MB Unit ID to 1 in the MB Client Data Block? Thanks, Jay Sam.Valiahdi the status is always 7002 without error! REQ is turning on and off continuously and no error is on status! Attachment MB Unit ID1.JPG (204 Downloads)
Jay. Posts: 1283 Rating: (105)
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9/5/2018 11:53 AM	Rate (0)
Sam.Valiahdi Posts: 8 Rating: (0)	I did it right now ! but still it's not working! Attachment mbclient.JPG (180 Downloads)
Sam.Valiahdi Posts: 8 Rating: (0)
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9/5/2018 12:02 PM	Rate (0)
Jay. Posts: 1283 Rating: (105)	After changing this and after downloading the configuration, you can also try to power off and on the PLC. sometimes the PLC needs a power reset to enable the settings which you made. Just try. Thanks, Jay Sam.Valiahdi I did it right now ! but still it's not working!
Jay. Posts: 1283 Rating: (105)
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9/5/2018 12:16 PM	Rate (0)
Sam.Valiahdi Posts: 8 Rating: (0)	I did and still not working! as a question: HW ANY interfaced is set to 64! my port 1 is ladder 65 and port 2 ladder 66! But if I set this to any of this it get error! Another question is about PG/PC interface ! is it require special setting? Attachment HWiden.JPG (183 Downloads)
Sam.Valiahdi Posts: 8 Rating: (0)	Last edited by: Sam.Valiahdi at: 9/5/2018 1:39:50 PM
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9/6/2018 1:23 AM	Rate (0)
Jay. Posts: 1283 Rating: (105)	Did you made sure your computer IP is the same as the IP which you set in the Modbus slave tool? Thanks, Jay Sam.Valiahdi I did and still not working! as a question: HW ANY interfaced is set to 64! my port 1 is ladder 65 and port 2 ladder 66! But if I set this to any of this it get error! Another question is about PG/PC interface ! is it require special setting?
Jay. Posts: 1283 Rating: (105)
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