Modbus Comms Through Ip-Serial Converter

[paulneal]

Hi,

 

I am using a lantronixs Ethernet to serial converter that has a modbus protocol converter in it. we have used it on numerous jobs now with no problems.

However i have one project where eventually the comms hangs up and will not recover. i just get port locked on everything. as soon as i restart Daqfactory it all starts working fine again.

 

any ideas of either curing it or a means of resetting the port.

 

Regards

 

Paul.

[AzeoTech]

Next time it locks up try reinitializing the port.  You can do it in script or at the command alert with:

 

device.mydevice.initcomm()

 

or simply open the configuration window for the port and then click OK.

 

Does the lantronix unit you are using work without the protocol converter (I'm assuming its an ModbusRTU->TCP converter)?  If so you might consider just going direct since DAQFactory can talk ModbusRTU over ethernet.