GE’s Genius I/O structure (IC660 prefix) is one of the more technologically advanced products ever introduced in the industrial PLC market. Discrete I/O blocks (IC660BBD prefix), analog I/O blocks (IC660BBA) and smart modules connect to a master GE PLC system via a robust, high-speed LAN to provide rugged and intelligent distributed I/O. The blocks and the LAN are configured with a GE Genius Hand-held Monitor (IC660HHM501) that can connect to the LAN by plugging into any block on the LAN or into the bus controller at the PLC processor.
The IC660HHM501 is a powerrful and robust configuration tool. Occasionally, the HHM501 gives faults when communicating to the Genius blocks. Here is how you correct that problem:
Problem: The Genius Hand-held Monitor (IC660HHM501) will not communicate to the Genius Block and the display shows ‘??’ instead of real values in the fields like ‘Block ID.’
Solution: Cycle power on the HHM501. When the unit reboots, it will ask you setup questions. When it asks What Protocol, select ‘Extended’ instead of ‘Standard.’ This will allow the hand-held monitor to communicate to the block again.
If this doesn’t solve the problem you are having, please contact our GE PLC Technical Support team at 1-800-784-9385.