Siemens SIMATIC S7-400 CP 440, Installation And Parameter Assignment

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Table of contents
Point-to-point connection CP 440 Installation and Parameter Assignment
12
Manual, 09/2007, A5E00057742-03
Figures
Figure 1-1
Arrangement of the Controls and Indicators on the CP 440 Communication Processor . ......... 18
Figure 2-1 10-Bit Character Frame.............................................................................................................. 23
Figure 2-2 Character Delay Time ................................................................................................................ 24
Figure 2-3 Position of the supplied protocols of the CP 440 in the reference model . ................................. 27
Figure 2-4 Sequence of a send operation . .................................................................................................. 32
Figure 2-5 Sequence of Receive Operation with End Criterion "Expiration of Character Delay Time". ...... 34
Figure 2-6 Sequence of receive operation with "End-of-Text Character" end criterion . ............................. 36
Figure 2-7 Sequence of receive operation with "Fixed Message Frame Length" end criterion . ................. 38
Figure 2-8 RS 422 Point-to-Point ................................................................................................................ 40
Figure 2-9 RS 485 Point-to-Point ................................................................................................................ 40
Figure 2-10 RS 422 Multipoint....................................................................................................................... 41
Figure 2-11 RS 485 Multipoint....................................................................................................................... 42
Figure 2-12 Block Checksum ........................................................................................................................ 44
Figure 2-13 Data traffic when sending with the 3964(R) procedure. ............................................................. 45
Figure 2-14 Flow diagram of sending with the 3964(R) procedure ............................................................... 47
Figure 2-15 Data Traffic when Receiving with the 3964(R) Procedure. ........................................................ 48
Figure 2-16 Flow diagram of receiving with the 3964(R) procedure (part 1). ................................................ 50
Figure 2-17 Flow diagram of receiving with the 3964(R) procedure (part 2). ................................................ 51
Figure 2-18 Data traffic when receiving corrupt data . ................................................................................... 53
Figure 2-19 Data traffic during an initialization conflict. ................................................................................. 54
Figure 2-20 Flow diagram of the startup of the 3964(R) procedure . ............................................................. 55
Figure 5-1 Wiring of the Recipient at the X27 (RS 422/485) Interface (ASCII Driver) . ............................... 75
Figure 5-2 Wiring of the recipient at the X27 (RS 422) interface (3964(R) procedure). .............................. 80
Figure 6-1 Time sequence chart for the 10 SEND_440 FB. ........................................................................ 93
Figure 6-2 Time Sequence Chart for the 9 RECV_440 FB . ........................................................................ 97
Figure 6-3 Time Sequence Chart for the 11 RES_RECV FB. ................................................................... 100
Figure 6-4 Contrasting Data Addressing in STEP 5 and STEP 7 . ............................................................ 101
Figure 8-1 Structure of the STATUS Parameter . ...................................................................................... 117
Figure 8-2
Example: Structure of the STATUS Parameter for the Event "Request Aborted Due to Complete Restart,
Restart or Reset". .............................................................................................................................................. 117
Figure B-1
X27 Cable for CP 440 - CP 340/CP 341/CP 440/CP 441 for RS 422 Operation (Four-
Wire)......................................................................................................................................... 145
Figure B-2 X27 Cable for CP 440 - CP 340/CP 341/CP 440/CP 441 for RS 485 Operation
(Two-Wire)................................................................................................................................ 146
Figure B-3 X27 Cable CP 440 - CP 544, CP 524, CPU 928B, CPU 945, CPU 948 for RS 422
Operation (Four-Wire Mode).................................................................................................... 147
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