1 CHAPTER OVERVIEW
This chapter introduces the PSL (Programmable Scheme Logic) Editor, and describes the configuration of the digital
inputs and outputs. It provides an outline of scheme logic concepts and the PSL Editor. This is followed by details
about allocation of the digital inputs and outputs, which require the use of the PSL Editor. A separate "Settings
Application Software" document is available that gives a comprehensive description of the PSL, but enough
information is provided in this chapter to allow you to allocate the principal digital inputs and outputs.
This chapter contains the following sections:
Chapter Overview 485
Configuring Digital Inputs and Outputs 486
Scheme Logic 487
Configuring the Opto-Inputs 489
Assigning the Output Relays 490
Fixed Function LEDs 491
Configuring Programmable LEDs 492
Function Keys 494
Control Inputs 495
P543i/P545i Chapter 19 - Digital I/O and PSL Configuration
P54x1i-TM-EN-1 485