Rockwell-automation 1775-KA PLC-3 Communication Adapter Module User Ma Instrukcja Użytkownika Strona 209
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Appendix
C
C1
Diagnostic Counter Block
At
this
byte offset:
This counter is stored:
1.
Bad CRC on acknowledgement [2] (Local error A
')
2.
No acknowledgment before timeout occurred (Local error B")
3.
Contention (while master
, detected message transmission by
another station)
4.
Acknowledgment contained an error (Local error "C")
5.
Local errors (Sum of A, B, and C above)
6. W
aits (no receive buf
fer space at destination station)
7. T
imed out (master failed)
8.
False polls (failure to transfer)
9.
Received acknowledgment when not master
10.
Message size too small (less than 5 bytes)
11
Incorrect DST
, or SRC = DST
12.
Memory not available for receive buf
fer
13.
Received message has bad CRC value [2]
14.
Message too long
15.
Message arrived when no buffer space left
16.
Retransmissions of previously received message
17.
Aborts (result of line noise)
18, 19.
Messages successfully transmitted
20, 21.
Messages successfully received
22, 23.
Command messages sent
24, 25.
Reply messages received
26, 27. Command messages received
28, 29. Reply messages sent
NOTES:
[1] The address of the first byte of the counter block can be determined by using the diagnostic
status command. Addresses of the other bytes listed here can be derived by adding the
appropriate number of bytes to the staring address of the counter block.
[2]
An
acknowledgment is part of the data highway protocol.
Data Highway Port Counters
- User Manual 1
- Table of Contents 2
- Table of Contentsii 3
- Table of Contents iii 4
- Figure 1.1 9
- Communication 9
- Introduction 11
- Chapter 1 11
- Figure 1.3 12
- Modem Application 12
- Installation 13
- Figure 2.1 14
- Figure 2.2 15
- Switches 15
- Figure 2.3 18
- Two PLC-3 Controllers 18
- Chapter 2 19
- Figure 2.7 22
- Figure 2.10 29
- Connection 29
- Data Highway Communication 46
- #H024$B12:37 = 15 48
- $B45:21 = $I12:33 51
- Chapter 3 52
- Addressing Rules and Examples 57
- 10017-I 58
- Figure 4.4 61
- $N 15 : 0, 20 64
- @FILE_A:16/8 66
- $B1:5/012 66
- #H024$015,4 67
- #H015$0121/010 68
- #H 020 $ B 15:9 68
- #H 020 @ WORD_9 68
- Chapter 5 77
- Message Procedure Commands 79
- NUM = 0 86
- LOOP: $B50:(NUM) = NUM 86
- NUM = (NUM +1) 86
- $D:12 = TO_BCD (27) 88
- COUNT = FROM_BCD ($D:12) 88
- Figure 6.3 89
- for Comments 89
- Error Reporting 90
- Chapter 7 92
- Programming Examples 95
- Chapter 8 96
- Computer to PC Communication 100
- Figure 9.1 102
- Computer to PC Communiation 103
- Chapter 9 103
- Full-Duplex Protocol 105
- Figure 10.1 108
- Chapter 10 111
- Figure 10.7 114
- Transmitter 114
- for Full-Duplex Protocol 114
- 110046–I 121
- Figure 10.12 124
- Message T 124
- Half-Duplex Protocol 128
- Chapter 11 132
- Figure 11.4 140
- Figure 11.8 143
- with Message Returned 143
- Figure 11.9 144
- Duplicate 144
- Figure 11.11 146
- Sink Full, Case 2 146
- Figure 12.2 150
- Message Packet Format 150
- Figure 12.3 151
- Reply Message Packet Format 151
- Figure 12.4 158
- PLC/PLC-2 158
- Data Table Byte Addressing 158
- Chapter 12 160
- 0 0 0 0 0 0 0 0 161
- A8 A7 A6 A5 A4 A3 A2 A1 161
- Message Formats 163
- Appendix A 165
- Figure A.2 166
- Reply Format: 173
- Error Codes 193
- 1773-KA Module 196
- Appendix B 196
- Local and Reply Error Codes 196
- Diagnostic Counter Block 209
- Diagnostic Port Counters 210
- Appendix C 210
- Modem Port Counters 210
- Detailed Flowcharts 211
- Appendix D 212
- Figure D.11 220
- Figure D.20 227
- SLEEP and W 227
- AKEUP Interaction 227
- Figure D.21 228
- Routine 228
- Worldwide representation 239
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