Posts Tagged honeywell udc2500

How to Avoid Honeywell Process Instrument Explorer (PIE) Software Communication Errors

Honeywell’s Process Instrument Explorer (PIE) configuration software used for configuring UDC controllers and the UDA analytical controller communicates with the instruments via RS-485, Ethernet, or Infrared (IR).

Since most newer PCs don’t ship with built-in serial ports to connect an IR adapter, you can use a USB-to-RS-232 converter, and then connect using the Actisys serial-to-infrared adapter (ACT-IR220L+). The USB converter will plug directly into your PC’s USB port, but install on a virtual COM port.

Here’s where it gets tricky: That COM port has to match the COM port used in PIE, and PIE doesn’t support ports above COM8.

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Using a Honeywell loop controller as a manual station

Industry statistics reveal that a fair percentage of control loops are controlled manually, and are not automated.   This fact was brought home last week, when a caller told us he needed “something to adjust the valve position so that the valve stays where it’s been set.  And it’s real important that it can’t accidentally go off its own”.   

What he was describing is what we call a manual station.   It’s a controller where the 4-20mA current output stays fixed where it is until someone pushes buttons on on the front of the controller: up to manually raise the output value, and down to manually lower it.  Typically, the output value is displayed for the operator as a digital number from 0 to 100 percent.  

So what’s available to fill the bill?
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