I/O Blocks > Discrete Input (DI) function block

Discrete Input function block status handling

Under normal conditions, aGood: Non-cascade status is passed through to OUT_D. However, the block supports a status action on failure and block error indications.

Action on failure

When the hardware goes bad, FIELD_VAL_D, PV_D, and OUT_D are set to Bad status and the BLOCK_ERR parameter shows Bad PV. When SIMULATE_D is enabled, FIELD_VAL_D, PV_D, and OUT_D are set to the simulation status. When the block is set to Man mode, OUT_D is set to Good: Non-cascade, Constant status.