Panasonic GM1 Series Reference Manual page 100

11.3 Specifications of Expansion Units
Output section (32 points)
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Limitations on the load current of the 64-point digital I/O unit (sink type)
The load current is limited as shown in the following figure depending on the voltage of the
external power supply.
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Limitations on the number of simultaneous input ON points (max. number of
points: 32) of the 64-point digital I/O unit (sink type)
11-14 WUME-GM1H-02