2/2/2023 5:38 PM | |
Joined: 3/30/2020 Last visit: 9/20/2024 Posts: 4777 Rating: (981) |
No. Communicating to many slaves at the same time from one communication port is not possible. The PLC, as Modbus master, gives each slave a turn to link the the master. Better throughput can be achieved by increasing the baud rate, reducing the delay times or using more ports (up to x3 CM). The implementation of the Modbus protocol in the S7-1200 is 'flawed'. The PLC cycle dictate how quick the Modbus regulation code is scanned. Therefor it is dependant on how big the user program is. One of the forum members created a wrapper that reduces the inefficiency of Siemens' implementation. You can find Mr Ola Bjørnli's work here [https://github.com/rexhip/rexhip]. This helps with the throughput. |
Activities of this user is voluntary. There is no obligation or liability placed on this user. Though optional, your 'please' and 'thank you' is highly valued. |
|
This contribution was helpful to1 thankful Users |
Follow us on