Functional Mechanisms Of The Application; User Program Of The S7-Cpu - Siemens SIMATIC S7-300 CPU Manual

4 Functional Mechanisms of the Application

4.1 User program of the S7-CPU

4 Functional Mechanisms of the Application
The following sections provide detailed explanations of the following 5 functions:
User program of the S7-CPU
Signal evaluation with the PSE_DIAG (FB50) block
HMI interface
Visualization
Message generation with the Messages block (FB10)
4.1 User program of the S7-CPU
The following figure shows the structure of the user program in the S7-CPU.
Overview
Figure 4-1
Initialization
Startup
[OB 100]
Analyzing the state of the
PSE200U module
interrupt
[OB 35]
Message generation and remote reset
Monitoring of 24 V load circuits
Entry-ID: 61450284, V1.1,
Cyclic
PSE_DIAG
Main
Messages
[OB 1]
05/2014
HMI interface
-ALARM_D
DATA
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