troubleshooting Question

How to Connect EZT-560 to PC by using RS-232 and EIA-485 Connections

Avatar of Swamp_Thing
Swamp_ThingFlag for United States of America asked on
HardwareNetworking Hardware-Other
17 Comments1 Solution1022 ViewsLast Modified:
This is more of a question for a electrical/engineering guy but I don't know who's out there...

  The engineering department at my work has a fridge-like device that is made by CSZ (Cincinnati Sub-Zero) and it is the EZT-560 model.  We put some of our products into this thing and from a control panel outside you can set the temp inside and monitor voltages, temp, etc., etc. and we can see how our product reacts to the changes.  On the back of this device are a few connectors labeled: "EIA-232", "EIA-485", "Ethernet".  The Ethernet I have hooked up to a networking switch so that engineers can view the temps, voltages, etc. through the devices web-based monitoring utility.  However, they also want the device to be able to be programmed from the PC so that when changes need to be made they don't have to stand in front of the device and use the tiny touch-pad screen to made changes.  To do this, I read that I am going to have to connect a cable from the back of the device to the PC.  Here's where I hit a road block...

On the back of the device, It looks like I could just use a 50ft. or so regular Serial cable (RS-232) to connect from there to the PC.  But on the "EIA-232" port, the pins 2,3 and 5 are the only pins present (there are holes where all the other pins would go).  I guess for EIA-232, not RS-232, there are only 3 wires that are used so only 3 pins are present on an EIA-232 connector.  Can I just connect a regular Serial cable from the PC to this port?  It would physically fit, but I don't know if it would work.  I could also use a converter to connect to the back of the PC (serial) and then run a 3-wire cable to the EIA-485 port and make a connector.  As you can see I'm completely lost and I don't think anyone else is going to know what I'm talking about unless they're an engineer and know this device.
Join the community to see this answer!
Join our exclusive community to see this answer & millions of others.
Unlock 1 Answer and 17 Comments.
Join the Community
Learn from the best

Network and collaborate with thousands of CTOs, CISOs, and IT Pros rooting for you and your success.

Andrew Hancock - VMware vExpert
See if this solution works for you by signing up for a 7 day free trial.
Unlock 1 Answer and 17 Comments.
Try for 7 days

”The time we save is the biggest benefit of E-E to our team. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange.

-Mike Kapnisakis, Warner Bros