Red Lion HMI to PLC Direct Koyo Question

[ncparks01]

I'm attempting to use the RedLion G306 HMI's to replace some obsolete units. The PLC is a DL405(Koyo). Part of the existing HMI coding uses illuminated pushbuttons, with GX inputs for the buttons and GY outputs for the lights. My version of Crimson 3 (493) doesn't list the GY outputs. What are my options?

 

[Steve Bailey]

A quick and dirty method would be ladder logic in the PLC that uses the GX or GY memory to turn on C memory points.

GX001 C123

-] [---------( )-

Another alternative is to identify the V memory addresses that the GX and GY points are mapped to (Appendix A of the DL405 manual) and read the bits of those words.