Point-to-point connection CP 440 Installation and Parameter Assignment
Manual, 09/2007, A5E00057742-03
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Programming Example for Standard Function Blocks
9
9.1 General Information
Introduction
The project example given here and contained in the CP440_PtP_Com project describes the
standard functions for operating the CP 440 communication processor.
The example can be executed with the minimum hardware equipment. The STEP 7 function
monitor/modify variables is also used (e.g. to modify transmitted data).
Objective
The project example is intended to do the following:
● aims to show the most important functions,
● to enable the correct functioning of the connected hardware to be checked (the example
is therefore simple and easy to follow)
● can easily be extended for your own purposes.
The project example consists of the following five separate components:
● CP440 SEND RECV: Interconnection with SEND and RECV for ASCII/3964(R)
● CP440 1CYC: Interconnection with SEND and RECV for ASCII/3964(R), cyclic job
processing
● CP440 ASCII BCC: Interconnection for ASCII with block check formation
● CP440 MASTER: Master station for interconnection with ASCII protocol
● CP440 SLAVE: Slave station for interconnection with ASCII protocol
The CP 440 is configured by the CPU when the latter is started (system service).
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