# Input Block

## Byte 0 - 1

Name | Description
--- | ---
Command | This is a 16-bit integer used to indicate the Job ID number (0-999) of the job to load. The job load is executed when the Execute Command bit is set by the PLC. The Command field must be held constant between the rising edge of the Execute Command signal and the rising edge of the Command Completed signal, or the results become indeterminate.

## Byte 2 - 3

Name | Description
--- | ---
Reserved | Unused.

## Byte 4 - 1919

Name | Description
--- | ---
User Data | Data buffer which can be read into the spreadsheet using the ReadUserDataBuffer or ReadLatchedUserDataBuffer function.