PSM Programmable Logic Controller (PLC) Function Scope, Basic Function - GF54.21-S-1012A

Model All (Light transporter) 

Overview 

This document contains information on:

• General 
• Function 
  • Logic function blocks 
  • Logic configuration block 
  • Filter function 
  • Logic configuration area 

General 

The parameterizable special module (PSM) provides functions of the programmable logic control (PLC). Using these software functions, the customer can realize simple logical operations between signals in the parameterizable special module's signal pool.

The PLC functions can be coded; this means that the input signals of the PLC can be freely selected by the customer from the signal pool.

With some blocks, it is also possible to set parameters such as thresholds and times.

Function 

Logic function blocks 

The logic function blocks are subdivided into 12 identically structured groups.

Processing takes place sequentially in groups by ascending group number.

After a group has been processed, the results of the processing are available in the signal pool and can be used further by one of the subsequent groups.

Logic configuration block 

Every logic configuration block consists of 4 identically constructed groups with various function blocks.

Every group can be activated individually.

The assignment of the input signals and the configuration of the function blocks take place by diagnosis.

Filter function 

The filter functions for various inputs of the function blocks are constructed identically, but can be coded individually.

A filter block is always active. If one or more filter parameter bits are set (where state does not equal "0"), the corresponding filter signal is also evaluated as an input signal (logical "AND").

The filter signals can also have a special position because they do not represent the non-inverted outputs of logic blocks and are therefore variable in their configuration.

The input signal is used logically inverted depending on the filter bit used.

Logic configuration area 

The properties of the function blocks are compiled and configured in their own area within the logic configuration block.