Unitronics PLC interface DLL with LabVIEW

[m_min]

Dear all,

Is it possible to interface PLC, which can be interfaced with VB6 using 2 files, with LabVIEW?


1. amiCommPro.ocx (1.0.0.1   ; Allen-Martin amCommPro Control)
2. UnCmDrv1.DLL

VB6 uses these DLL and OCX files to connect to PLC via serial port. 

[MikeS81]

Hi m_min,

if you have the protocoll description you can use the VSIA functions to communicate with the PLC over serial port.

Mike

[m_min]

Unitronics PLC vision seires can be interfaced with labVIEW by using Modbus FB (from unitronics side) and use serial modbus example as attached here. I couldn't remember the author(NI itself?) of this serial modbus example but i guess we owe him some thanks for this example.

[tst]

Also, if you happen to get their one of their simpler PLCs, I don't think they support Modbus, but they do have a simple ASCII protocol.

[DanRichards]

Hi m_min,

Please see the following article: Supported Device & Driver Plug-in List for NI-OPC Server <http://zone.ni.com/devzone/cda/tut/p/id/6417> Please let me know if that helps.

Regards,

Dan Richards