# Status Block Bits

The Status bit block indicates the current state of the vision system.The SLMP scanner updates the Status bit block once when the protocol starts, and whenever a new status is available. The Status bit block is 112 bits, some of them being reserved.

The usage and reservation of the Status block bits are summarized in the below table.

Note: For a detailed description of the signals, see the Industrial Communications Signals topic.

Byte | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0
0 | Online |  |  | Acq Error | Reserved | Trigger Ack | Trigger Ready
1 | Error | Command Failed | Command Completed | Command Executing | Results Valid | Results Buffer Overrun | Inspection Completed |
2 | Reserved |  | Exposure Complete |  | String Command Ack | Set User Data Ack
3 | External Event Ack 7 | External Event Ack 6 | External Event Ack 5 | External Event Ack 4 | External Event Ack 3 | External Event Ack 2 | External Event Ack 1 | External Event Ack 0