9/28/2022 7:35 PM | |
Joined: 11/26/2014 Last visit: 7/12/2023 Posts: 40 Rating: (2) |
Hallo SIMATIC users, I have read the documentation of SIMATIC Modbus/TCP communication using CP 343-1 and CP 443-1 - SIMATIC SIMATIC Modb… - ID: 103447617 - Industry Support Siemens and Add-on blocks for Modbus/TCP communication - ID: 62830463 - Industry Support Siemens up and down. Unfortunately, I cannot find any indication of what must be configured in the DB MODBUS_PARAM_CP if I define the Modbus jobs via FB Job_List_SCL (FB912). The only thing that remains is the target DB for the (entire) address range, which can also be larger than 125 words, for the respective connection ID from NetPro. Does anyone here know anything further? I have a test project in which the DB contains MODBUS_PARAM_CP: ID1_db_2 W#15#15
ID1_start_2 W#16#238 ID1_end_2 W#16#556 i.e. more than 125 words, which is permitted as telegram length according to the MODBUS TCP manual. However, this range is then divided in the Job_List_SCL into several telegrams with a length =< 125 words. thank you stefan |
Last edited by: Jen_Moderator at: 09/29/2022 05:11:28Link optimized. |
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