Four analog current outputs with diagnostics
The 6ES7145-4GF00-0AB0: Diagnostics include per-channel wire-break detection (outside zero range), a configurable diagnostic alarm, short-circuit protection at module level, and substitute values that can be set for fail-safe operation. The group error SF indicator (red LED) gives a quick visual on fault status. Reverse-polarity protection is built in against destruction. The module is isolated between channels and backplane bus; the type test uses 707 V DC. No inter-channel isolation means commons share a return, so plan accordingly if loops share a supply.