Point-to-point connection CP 440 Installation and Parameter Assignment
Manual, 09/2007, A5E00057742-03
7
Table of contents
Preface ........................................................................................................................................................ 3
1 Product Description . ................................................................................................................................. 13
1.1 Uses of the CP 440.....................................................................................................................13
1.2 Components Required for a Point-to-Point Connection with the CP 440. ..................................15
1.2.1 Required Hardware Components ...............................................................................................15
1.2.2 Required Software Components. ................................................................................................16
1.2.3 Incompatible CPU versions. ........................................................................................................16
1.3 Design of the CP 440..................................................................................................................18
1.4 Features of the X27 (RS 422/485) Interface. ..............................................................................20
2 Basic Principles of Serial Data Transmission............................................................................................ 21
2.1 Serial Transmission of a Character . ...........................................................................................21
2.2 Transmission Procedure with a Point-to-Point Connection . .......................................................25
2.3 Transmission integrity . ................................................................................................................27
2.4 Data Transmission with the ASCII Driver . ..................................................................................30
2.4.1 Data Transmission with the ASCII Driver . ..................................................................................30
2.4.2 Sending Data with the ASCII Driver. ...........................................................................................31
2.4.3 Receiving Data with the ASCII Driver . ........................................................................................33
2.4.4 Topologies Between the Communication Partners. ....................................................................40
2.5 Data Transmission with the 3964(R) Procedure.........................................................................43
2.5.1 The Control Characters of the 3964(R) Procedure. ....................................................................43
2.5.2 Block Checksum .........................................................................................................................44
2.5.3 Sending Data with 3964(R).........................................................................................................45
2.5.4 Receiving Data with 3964(R) . .....................................................................................................48
2.5.5 Handling Corrupt Data ................................................................................................................53
3 Commissioning the CP 440 . ..................................................................................................................... 57
4 Mounting the CP 440 . ...............................................................................................................................
61
4.1 CP 440 slots................................................................................................................................61
4.2 Mounting and Dismounting the CP 440. .....................................................................................62
4.2.1 Installation steps .........................................................................................................................62
4.2.2 Removal steps ............................................................................................................................63
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