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Allen Bradley + IRC5

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Hello everybody, I'm having a problem connecting Allen Bradley 1734-PDN +1734 IE2C analog module to IRC5 through CAN-bus.
I know that the module has default BoardNum 63 and I can find the module without any errors. Problems start, when I'm trying to make an Analog Signal.
If I define "unit mapping" 0 or 1 or 2 or what ever number. I get Signal "bit value <1> assigned by unit mapping 0" is in conflict with my signal type. image Becouse analog signal is from 2 to 32 bits only.
As I understand, the IRC5 sees my Board63 as an digital input board. What could be the solution to my problem?
thank you Bill