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Only one IO pin is displayed If a custom function block has the same name for an input and output pins.

Goals and Symptoms
Only one pin is displayed in the PLC Program Viewer web page, If a custom block has the same name for an input and output pin.

Facts and Change
140NOE77111, BMENOC0311, BMENOE0110, TSXWMY100

Causes and Fixes
If the Unity custom function block uses the same name for the input and output pins, the PLC Program Viewer web page will
only show one of the pins.

The reason this occurs is becasue the mapped variable entry gets overwritten with the last variable instance.  Engineering has
determined that  the issue is very difficaul to fix and recommends the following workaround.
  • Do not use the same name for the input and output pins.
  • Add the variable to both the input and output pins in the FBD editor, rather than to just one of the pins.


 
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