I/O-DOUT
Definition:
1. DOUT1 (Group OK): High voltage level, Group OK (screw counter OK, fastening
result of individual screw might be OK or NG)
2. DOUT2 (OK): High voltage level, fastening result OK
3. DOUT3 (NG): High voltage level, fastening result NG
4. DOUT4 (None) : Not in use
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