Today is...
Tuesday, October 23, 2018
Welcome to, the global online
community of automation professionals.
Featured Video...
Featured Video
EtherCAT with CTC’s master lets your multivendor network play well together...
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
Serial/USB Modbus to Labview
Modbus serial to USB converter and LABView

I am looking to control a TEMPCO TEC-9100 temperature controller using LABView and MODBUS protocol.

I am using a rs232-USB converter. When I use the software given by TEMPCO to control the machine, it works perfectly. But when I attempt to control the machine through Modbus I/O servers within Labview I cannot establish a connection. The attribute "Commfail"

is returning the value "true". Is this because of my USB converter?

Note: I am new to both Labview and Modbus so please be patient.

Thank you very much in advance!

Does your 'machine control' software use the TEC9100 RS-232 communications port?

What 'machine control' software is this? The only factory software the Tec 9100 manual:

mentions is device configuration software which uses a special cable that connects to a device programming/configuration port.

Do you use the TEC 99014 cable with your USB/RS-232 converter or an adapter that adapts the pins as shown on page 11?