485 modbus communication with Watlow PM trouble

[teslac]

I have a Watlow PM that I can see over MAX now and using the EZ zone code can get manufacture info from.  I also am using (for the first time) the add-on Modbus over serial tool from Saphire to try to write or read anything from it and I always get a "time out" error from the slave.  I tried to do a simple VISA read as I found on some posts and I get the same time out error.  It seems if I try anything from Labview I get this error.  I even tried writing Hex to the thing with the same results.  Can someone throw me a bone?

[Dennis_Knutson · Accepted solution]

There are a couple of free libraries.

http://sine.ni.com/nips/cds/view/p/lang/en/nid/201711

https://decibel.ni.com/content/docs/DOC-30140