11/25/2022 4:45 AM | |
Joined: 4/26/2016 Last visit: 8/6/2024 Posts: 42 Rating: (0) |
Hello, I am using openmodbus TCP communication with CPU315-2PN/DP with reference to the document https://cache.industry.siemens.com/dl/files/304/22660304/att_57060/v1/modbustcppncpu_en.pdf As per document, A maximum of 125 registers is possible for reading functions per message frame for Holding and Input Register. A maximum of 2000 bits is possible for Coils and Inputs. In my application, i need to read more than 125 register, presently 164 holding registers and it may increase later. How i can read 164 holding register from the modbusTCP device? Thank you Attachmentmodbustcppncpu_en.pdf (605 Downloads) |
Last edited by: VBP at: 11/25/2022 04:51:02Last edited by: Jen_Moderator at: 11/25/2022 08:55:38PDF attached from link. |
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3/28/2023 2:45 PM | |
Joined: 4/26/2016 Last visit: 8/6/2024 Posts: 42 Rating: (0) |
Hi, I program one request [snip] I don't know how to make second request. I tried like [snip] Which doesn't work. Could you please help me to write second request? Thanks AttachmentRequests.zip (641 Downloads) |
Last edited by: VBP at: 03/28/2023 14:56:10Last edited by: Jen_Moderator at: 03/29/2023 09:43:32Requests added as .zip file. |
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