User Manual Instruction Manual

29 Publication 1746-UM009B-EN-P - September 2007

Chapter

Processor and Module Considerations

This chapter describes concepts that you need to understand to

program the fast analog I/O module in an SLC 500 system.

The following are processor considerations.

• Update processor analog I/O data

• Monitor analog I/O data

• Address I/O image words

The following are module considerations.

• Resolve data of the module’s I/O channel converters

• Convert analog input data

• Compute the analog input signal level

• Convert analog output data

• Compute the analog output

• Filter input channel

• Compute time delay for A/D conversion

• Determine response to slot disable

• Determine safe state for outputs

• Enter module ID code