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Communications Mode; Using The "Send" And "Receive" Function Block - Siemens SIMATIC S5 CP 523 Manual

Serial i/o module
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Table of Contents

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1
System Overview
2
Technical Description
3
Hardware Installation
4
Notes on Operation
5
Address Assignment
6
Print Mode
7

Communications Mode

7.1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.1
3964 and 3964R Protocols (relevant in 3964(R) mode only . . . . . . . . 7 - 2
7.2
Prerequisites for Operation in Communications Mode
7.3
Setting the CP 523 Parameters in Communications Mode
7.3.1
Setting the CP 523 Parameters with the Memory Submodule
7.3.2
Setting the CP 523 Parameters in the User Program . . . . . . . . . . . . . . 7 - 23
7.4
CP 523 Feedback Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 43
7.4.1
Reading the Status Byte, the Status of the Peripheral Device and
the Current Clock Data
7.4.2
Reading Coordination Information after
"Coordinate Data Transfer"
7.5
Overview of Permissible Job Requests in Communications Mode
7.6
Sending Message Frames to a Peripheral Device
(Job Number A001
7.6.1
Sending Message Frames with the
Message Frame Length Specification
7.6.2
Sending Message Frames with End-of-Text Character
Specification
7.6.3
Sending Message Frames with 3964(R) Protocol . . . . . . . . . . . . . . . . . 7 - 70
7.7
Receiving a Message Frame from a Peripheral Device (A080
7.7.1
Receiving Message Frames with Evaluation of the Specified
Message Frame Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 76
7.7.2
Receiving Message Frames with Evaluation of the Specified
End-of-Text Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 78
7.7.3
Receiving Message Frames with 3964(R) Protocol . . . . . . . . . . . . . . . 7 - 82
8
Using the "SEND" and "RECEIVE" Function Blocks
EWA 4NEB 811 6044-02a
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 47
)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 60
H
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 7 - 7
. . . . . . . . 7 - 9
. . . . . . . . . . . . . . . . . . . . . . . . . . 7 - 64
H
7 - 1
. . . . .
7 - 10
.
7 - 58
7 - 66
) . . . .
7 - 72

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