Programming Example – Standard Blocks
9-2
Point-to-point connection CP 440 Installation and Parameter Assignment
A5E00057742-02
9.1
General
The project example given here and contained in the CP440_PtP_Com project
describes the standard functions for operating the CP 440 communication
processor.
Objectives
The project example is intended to do the following:
•
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)
•
To be extended for your own purposes without difficulty
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 parameterized by the CPU when the latter is started up (system
service).
Requirements
The example can be run through with a minimum hardware configuration. The
STEP 7 function Monitor/Modify Variables is also used (e.g. to modify send
data).
9.2
Device Configuration
Using the Example
The following are some of the devices that could be used to try out the program
example:
•
An S7-400 PLC (mounting rack, power supply, CPU)
•
An CP 440 module with a communication partner (e.g. a second CP) or you
could plug in a “short-circuit connector”, i.e. the send line is bridged to the
receive line
•
A programming device (e.g. PG 740)
Содержание SIMATIC CP 440
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