1 CHAPTER OVERVIEW
This chapter introduces the PSL (Programmable Scheme Logic) Editor, and describes the configuration of the digital
inputs and outputs. It pr
ovides 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 291
Configuring Digital Inputs and Outputs 292
Scheme Logic 293
Configuring the Opto-Inputs 295
Assigning the Output Relays 296
Fixed Function LEDs 297
Configuring Programmable LEDs 298
Function Keys 300
Control Inputs 301
Inter-PSL Inputs and Outputs 302
P24xM Chapter 15 - Digital I/O and PSL Configuration
P24xM-TM-EN-2.1 291