7/29/2020 2:29 PM | |
Joined: 1/14/2020 Last visit: 8/29/2024 Posts: 31 Rating: (0) |
Greetings, I am using S7-1200 Siemens PLC and a third party GPRS communication module which has option to be connected to the PLC over Modbus TCP/IP standard: https://wiki.teltonika-networks.com/view/Configuring_Modbus_TCP_Master Can someone tell me the procedure and how to do step-by-step connection between this GPRS module and S7-1200 PLC? Do I need to have any other hardware except CPU and PSU on the PLC side? Is there some predefined FB block which I can use for this kind of communication? Do I need to set some general settings in the PLC and where? How to design tags for this kind of communication (do they need to be in some specific format.,real/word/int)? I am using this application for the first time in my life so step-by-step procedure for dummies would be of a great help. Thanks in advance! ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 07/30/2020 09:10:45New subject after splitting |
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7/29/2020 4:48 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2685) |
Hello Dogmica; Do you propose to connect your S7-1200 CPU to your Telefonica router with a TCP/IP cable, as the END_1 node appears in your example configuration ? In that case, there are instructions for Modbus TCP data exchanges available in Step 7 v1x (TIA Portal): MB_CLIENT and MB_SERVER. In Modbuis TCP standards, you use the term Client instead of Master, Server instead of slave, master and slave are Modbus RTU designations.The following document provides example code and instructions on setting the S7-1200 as as Modbus TCP server: How do you program and parameterize Modbus/TCP communication between S7-1500 CPUs and S7-1200 CPUs? https://support.industry.siemens.com/cs/ge/en/view/102020340 If your configuration is different, please advise, so we can try to provide information to help you out. Hope this helps, Daniel Chartier |
7/31/2020 12:31 AM | |
Joined: 1/14/2020 Last visit: 8/29/2024 Posts: 31 Rating: (0) |
Greetings, Please allow some time to study your proposed method and links. I will get back as soon I have new and better findings. Appreciate your help. |
8/8/2020 1:42 PM | |
Joined: 1/14/2020 Last visit: 8/29/2024 Posts: 31 Rating: (0) |
Greetings, Please find GPRS wanted module manual link: https://wiki.teltonika-networks.com/view/RUT240_WebUI I would like to connect this module via S7-1200 PLC. Is there some already predefined FB which I can use for this Modbus communication and settings (as there is PULL and GET FB)? Is Modbus communication the only way which I can use between these two devices? What I need to know (which info) to make this communication alive between these two devices? Thanks a lot! |
8/8/2020 1:46 PM | |
Joined: 1/14/2020 Last visit: 8/29/2024 Posts: 31 Rating: (0) |
Greetings, Please find some answers below. Somewhere in the upper messages there is link to Telefonica desired used GPRS device manual. I do not know will this help. Do you propose to connect your S7-1200 CPU to your Telefonica router with a TCP/IP cable, as the END_1 node appears in your example configuration ? Dogmica: Yes How do you program and parameterize Modbus/TCP communication between S7-1500 CPUs and S7-1200 CPUs? Dogmica: I do not know. I have never done this. This is my first trial of this kind of communication setup. Thanks. |
8/8/2020 2:06 PM | |
Joined: 12/18/2014 Last visit: 9/23/2024 Posts: 33823 Rating: (4203) |
How do you program and parameterize Modbus/TCP communication between S7-1500 CPUs and S7-1200 CPUs? |
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