If you do not have the E-rom chip it gives you this error light ON
If you put the E-rom chip in the unit the run light come on and CPU fault light is on
This PLC is outside of the machine when testing it
Does this matter if outside of the machine to get this CPU fault light to be ON
If you put the E-rom chip in the unit the run light come on and CPU fault light is on
This PLC is outside of the machine when testing it
Does this matter if outside of the machine to get this CPU fault light to be ON
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