iX Talk

I am building a Modbus Network System using HMI's Beijer (T7E) works as Modbus Master. The Modbus Master communicates with 10 Slaves (Delta PLCs). I have a problem that is the Modbus Master cannot read data from Slaves (Slave Address 01 is OK) (using function code 0x03 in Modbus Protocol). But the Modbus Master can write data to Slaves (using function code 0x06 in Modbus Protocol). I configured my Default Modbus Master Address is 01 and Slaves Address from 0x01(0-decimal) to 0x0A (10-decimal).

Please give me any idea to solve this problem!

Thanks in advance!

- Have you checked the "Direction" in the "Data Exchange" settings of your tags?
You have to make this column visible by checking the "Data Exchange" box at the top of the tags page.
- Have you set up each slave as a separate controller in the Controllers section?

Thank onedumbtrucker for your help!
- I have checked "Data Exchange" and "Direction" in the Tag Window to configrure my Tags.
- I have set up each slave as separate controller in the controller section.
But I cannot still solve my problem.
Could you tell me how to set up default station for each controller (the same address or various address for 10 slaves)?

Thanks in advance!