Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario Pagina 115
- Pagina / 235
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
Message Packet Formats
Chapter 5
5-36
Word Range Read
This is a read command whose starting address is either a word symbol, a
file symbol plus a word offset, or a block address. This starting address
must point to a word in a file. The function code is 1. A special case of
this command is the single-word read, where the number of bytes to read
is only two bytes (one word).
TNSDST SRC CMD 00 00FNC
0F 01
PACKET
OFFSET
TOTAL
TRANS
ASCII SYMBOL
(8 CHARS. MAX.)
W/F
00
TNSDST SRC CMD FNC
0F 01
PACKET
OFFSET
TOTAL
TRANS
PLC- 3 LOGICAL
ADDRESS
(2-51 Bytes)
SIZESTS
TNSSTSCMD
4F
SRCDST
TNSSTSCMD
4F
SRCDST EXT
STS
STS
DATA
— Max. of 244 Bytes
or 122 W
ords
Command
Format:
Reply Format:
(EXT STS Byte Is Optional)
B.
Format When Reporting an Error
A.
Format When Successful Execution
B.
Logical Address
A. W
ord Symbol Address
SIZE
- Interface Module 1
- Important User Information 2
- Table of Contents 3
- Table of Contentsii 4
- Introduction 5
- Figure 1.1 7
- 1770-KF2 7
- Chapter 1 8
- Specifications 8
- Communication Concepts 13
- Figure 2.1 15
- Highway Network 15
- Figure 2.2 17
- Network Connected to V 17
- Installation 25
- Figure 3.2 28
- Figure 3.5 33
- Dimensions 33
- Chapter 3 39
- Figure 3.10 42
- Diagnostic 42
- (LED) Indicators 42
- Asynchronous Link Protocols 44
- Figure 4.1 47
- Figure 4.3 50
- Software 50
- Implementation of Data Paths 50
- Figure 4.6 52
- Protocol 52
- Environment 52
- Figure 4.7 54
- Logic for Implementing T 54
- Chapter 4 55
- Figure 4.13 62
- Message T 62
- Figure 4.14 67
- Figure 4.15 70
- Figure 4.24 78
- Message Sink Full, Case 2 78
- DLE ENQ STN BCC DLE EOT 79
- Message Packet Formats 80
- Figure 5.1 81
- Chapter 5 87
- Command Packet: 110
- Command Format: 116
- Data Encoding and Addressing 138
- Figure 6.1 139
- Numbers 139
- Figure 6.2 140
- Representation, Number 239 141
- Figure 6.3 141
- Figure 6.4 142
- Hexadecimal 142
- Figure 6.5 143
- 00100000 00000000 146
- First Byte Second Byte 146
- 00110100 00000000 151
- 00 0010100010 152
- 00 0000 0001000110 152
- Error Reporting 156
- Chapter 7 159
- Local Error Codes 164
- EXT STS byte 196
- Switch Settings 197
- Appendix A 198
- Message Formats 200
- (STS, EXT STS) 201
- Detailed Flowcharts 205
- Appendix D 206
- Data Link Layer 228
- Figure E.1 229
- Transition at Master Station 229
- Worldwide representation 235
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