7/11/2019 9:39 AM | |
Joined: 4/14/2019 Last visit: 9/11/2024 Posts: 43 Rating: (0) |
Hello, i am trying to communicate my s7 1513-1 pn plc with 3rd party plc via modbus. when i use the "Modbus Comm Load" instruction either none of the done, Error bits are high but the status is 7000 { Block Idle }, what does that exactly mean & how to get out from this..,?? ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 07/11/2019 13:37:59New subject after splitting |
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7/11/2019 2:33 PM | |
Posts: 3093 Rating: (323)
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Hello, How do you evaluate the status of system blocks in STEP 7 (TIA Portal)? Regards, |
7/12/2019 9:33 PM | |
Joined: 4/14/2019 Last visit: 9/11/2024 Posts: 43 Rating: (0) |
hii thannks for your answer hardware we are using : cpu 1513-pn Modbus: CMPTP-1 ports used in module 12 and 14. Baudrate:19200 length:8 Parity:None Stop Bits:1 i checked through modscan everything is fine i read the values. i am new to the modbus rtu communication. can you explain me the process i will be great help for me. AttachmentNew folder.zip (279 Downloads) |
7/12/2019 10:01 PM | |
Posts: 111 Rating: (31) |
This information is only useful if you want someone to do the work for you. There is no evidence that you intend to follow simple suggestions. Wait for someone to take pity on you and code for you. Or learn from the Siemens example:
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This contribution was helpful to1 thankful Users |
7/12/2019 10:31 PM | |
Joined: 7/7/2010 Last visit: 10/18/2024 Posts: 15327 Rating: (2432)
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Would you kindly post the rest of the hardware configuration below the Diagnostics part shown in the 2nd picture? The message configuration, start detection, end detection, and so on is important. When you reviewed the manual for the module you are using for Modbus RTU, did it offer suggestions for use with Modbus RTU? To learn more about how Modbus works in general, visit http://www.modbus.org/tech.php The first link in the body of that page describes all you would ever want to know. How that knowledge will help you with the S7-1200/1500 and TIA Portal is probably not as helpful as reading the F1-Help in the TIA Portal software as it relates to Modbus (non Modbus-tcp) blocks.
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science guy |
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7/12/2019 11:16 PM | |
Joined: 4/14/2019 Last visit: 9/11/2024 Posts: 43 Rating: (0) |
yes the communication module will support modbus rtu
AttachmentNew folder.zip (327 Downloads) |
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