IAI America ERC2 - Manual (Page 140)

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7.11.1 How to Determine the Final Position
The PLC manages the number of movements to determine the end of positioning. To be doubly sure, the zone output
signal can also be used concurrently.
Set the PLC so that it checks the ON/OFF status of the zone output signal upon completion of positioning, and
determines, if the signal is OFF, that the last work part has been reached.
If the count in the PLC does not match the status of the zone output signal, signal timings may not be synchronized.
Position No. 1
10-mm
pitch
Last load
Zone output signal
The coordinate immediately before the
last load is set as the boundary+ value.