Status Display and Error Messages of PS2
16.3 Hardware Status Signals ERR0/ERR1
See connector descriptions of X1 and X2 as well as X12
ERR0 ERR1 Meaning
0 0 The device is turned off.
1 0 Overvoltage or undervoltage occurred.
0 1 Power supply is missing.
1 1 The device is switched on.
166 Drive System SD2 - Hardware Description