AutomationTechBrian
Lifetime Supporting Member
I've been talking to a customer about creating an HMI screen that tracks machine productivity. The only external input would be one 4-20mA analog signal. Cost is a little bit of a challenge in selling the project, so I'm trying to figure out the cheapest way to get a 4-20mA value into the Red Lion HMI (probably G3). I was thinking an Automation Direct PLC and maybe bringing it in on a serial port. (I'm assuming the drivers are available). Seems like overkill, but can't think of a cheaper way to do it. Any thoughts?
This will be in a stand-alone enclosure, with a 24vdc power supply for the HMI. 110vac is coming in, along with one analog cable. That's it. Later on, they would add an ethernet cable for using the web server feature.
This will be in a stand-alone enclosure, with a 24vdc power supply for the HMI. 110vac is coming in, along with one analog cable. That's it. Later on, they would add an ethernet cable for using the web server feature.