11/4/2014 10:20 AM | |
Posts: 3 Rating:
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Hi, I've searched the forum, but didn't find a solution yet ... . I'm using a S7 1500 CPU which is connected to a ET200SP island via ethernet cable. The ET200S has a CM PtP module. The module has to communicate with an external controller (DEIF) via modbus RS485. I've used block "Modbus_Comm_Load" (in OB100) to specify the configuration of the CM PtP module and the "Modbus_Master" block to specify the communication parameters. (In the attachement a screenshot of the two blocks) The communication isn't working and the "modbus_master" block returns error codes 7001, 7002 and 8281. I can't seem to find where I can specify the "data bits" and the "stop bits". I'm using TIA Portal V13. Kind regards! Wim
AttachmentCM_PtP.zip (506 Downloads) |
11/4/2014 6:00 PM | |
Posts: 3 Rating:
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Thank you for the response! I'm using a ET200SP. In the attachement the topology view and the configuration of the two devices. The modbus_comm_load seems to be OK and response with done. I can not change the stop bits with the configuration. I can only select modbus communication and then it says I have to configurate it with the user program. Kind regards, Wim
AttachmentCM_PtP.zip (416 Downloads) |
11/5/2014 7:25 AM | |
Joined: 3/20/2013 Last visit: 4/3/2024 Posts: 676 Rating:
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Hey Wim_E you had a look at this application example: http://support.automation.siemens.com/WW/view/en/68202723 |
Best Regards, |
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11/7/2014 2:44 PM | |
Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4767 Rating:
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