J
I have an issue and I'm sure someone has ran into this before.
Setup:
B&B ESP901 serial server
Kepware OPC
hmisys.com Modbus slave sim
Modbus Test Pro (good Modbus master software)
I set up an old IBM laptop with a Modbus slave simulator configured on it. Seems to work fine.
Using Kepware OPC, I set up two different devices. One TCP and one serial, with the serial using a virtual com port.
On Kepware, the TCP poll fails, but the serial (on the virtual com) works fine. Note, the B&B was configured to have multiple connections, so that isn't the issue.
Using a program called Modbus TestPro, I can poll the laptop using TCP and it also works. BUT, I can only poll it when I select "raw" TCP.
I'm *thinking* that since it works on my secondary program, Kepware may be using normal TCP and the B&B only works with raw TCP packets.
I can't find anything on changing these setting on Kepware or the B&B.
If anyone has ever ran into this, I would be interested in hearing solutions.
Setup:
B&B ESP901 serial server
Kepware OPC
hmisys.com Modbus slave sim
Modbus Test Pro (good Modbus master software)
I set up an old IBM laptop with a Modbus slave simulator configured on it. Seems to work fine.
Using Kepware OPC, I set up two different devices. One TCP and one serial, with the serial using a virtual com port.
On Kepware, the TCP poll fails, but the serial (on the virtual com) works fine. Note, the B&B was configured to have multiple connections, so that isn't the issue.
Using a program called Modbus TestPro, I can poll the laptop using TCP and it also works. BUT, I can only poll it when I select "raw" TCP.
I'm *thinking* that since it works on my secondary program, Kepware may be using normal TCP and the B&B only works with raw TCP packets.
I can't find anything on changing these setting on Kepware or the B&B.
If anyone has ever ran into this, I would be interested in hearing solutions.