1.5.4.2.1 LED display
The LED display on the replacement device is changed:
Fig. 68: AO523
No. Display of module
1 8 yellow LEDs to indicate the signal status of the analog inputs (X2 and X3)
2 8 yellow LEDs to indicate the signal status of the analog inputs (X6 and X7)
3 2 red LEDs to indicate errors (of AO523 module)
4 1 green LED to indicate the status of the supply voltage of the AO523 module (is
supplied via X4)
The replacement device does not provide a test button to measure functionality.
Replacement devices: I/O modules > Replacement device 07AC91-AD
2018/09/24 3ADR010122, 8, en_US 109
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