Issue
Does Modbus TCP/IP xDriver opens socket connection per each device or the gateway of the devices?
Product Line
Andover Continuum
Environment
- NetController - CX9900, CX9940, CX9680.
- Continuum bCX9640 (Infinet)
- Continuum bCX4040 (BACnet)
Cause
As some Modbus TCP/IP gateways have the limitation of maximum TCP/IP connections, if Modbus TCP/IP xDriver opens a socket per modbus device and keeps it open, the gateway might run into a problem due to the limited number of socket connections.
Resolution
The Modbus TCP/IP xDriver opens one(1) socket connection per server not device.
So for a gateway that has a number of devices, the Modbus TCP/IP xDriver only uses one(1) socket connection.
