24V DIN on C2:1 or C2:2 causing application load error in

Ethan Zeman 2 years ago in IQANdesign updated by Gustav Widén (System support) 2 years ago 4

I recently encountered an error on a machine in the field where an MD4 will not boot up if it has 24 volts coming into C2 pin 1 or C2 pin 2.  MD4 is running IQAN Design 6.08.  Instead it will say "IQAN-MD4 Safe mode! Application no loaded Open or short circuit on ADDR pins."  I was able to replicate in a lab.  

We recently renewed our IQAN license and updated to the latest  version of design which is when this problem started.  As a test, I reflashed the exact same program except that it was written in IQAN design 6.02.  I did not encounter the same issue with IQAN 6.02 so I believe this problem was introduced in 6.08.  

Please review as we have machine in the field that have been running for a while that are using C2:1 and C2:2 as rocker switch inputs.  The MD4s will not boot while the rocker switch is in the ON position.  

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