Counter module FM450-1

[melad]

Dear all,

the following error happened with me as following 

1-power cut happened 

2-rack with DO wasn't working "meaning no DO on plc module or from PLC but from function was active & some DO was blinking very fast"

action I took 

1-after more try change address for DO module from H/W configuration with spare DO "using Rewiring Option" worked well 

but I face the following error "i don't if problem was new or related to last action'

error on counter module FM450-1  I/O access error and error on FC40 "System function for counter module"

no change in H/W wiring in field was done 

any one need more data can ask 

DO & FM not on the same rack 

CPU416

[Jairus]

yes it related.   because " I/O access error " occurs when you trying to access to I/O´s that are not assigned to the CPU. you can get more info in diagnostic buffer.