Rockwell Automation 1785 PLC-5 User Manual Page 82
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1785-UM022C-EN-P - February 2008
4-2
The fields of the MG data type that you can directly address are:
For more detailed information about writing ladder programs and
using message instructions, see your programming software
documentation.
Multihop Messaging Via the MSG Instruction
You can use the MSG instruction to communicate from a processor
on one ControlNet link to a processor on another ControlNet link via
ControlBus using 1756-CNB ControlNet bridge modules.
You can also configure a ControlNet ladder MSG instruction to:
• a Data Highway Plus device by bridging across the 1756-CNB(R)
and 1756-DHRIO modules
• an Ethernet device by bridging across the 1756-CNB(R) and
1756-ENET modules
Refer to your programming software documentation for information
about configuring multihop messages.
enter the size in
elements
Type a number of elements from 1 to 1000.
enter the destination
network address
Type a number from 1 to 99.
enter a destination
data table address
Type the destination data table address.
If you want to: Do this:
Field Definition Location
.EW
Enabled-waiting flag bit word 0, bit 02
.CO
Continuous control bit word 0, bit 03
.ER
Errored flag bit word 0, bit 04
.DN
Done flag bit word 0, bit 05
.ST
Started flag bit word 0, bit 06
.EN
Enabled flag bit word 0, bit 07
.TO
Abort (Time out) control bit word 0, bit 08
.NR
No-response flag bit—not used word 0, bit 09
.NC
No-cache bit word 0, bit 10
.ERR
Error-code word word 1
.RLEN
Requested length word word 2
.DLEN
Done length word word 3
.DATA[0] through.DATA[51]
Remaining words words 4 through 55
1756-CNB
ControlBus
ControlNet Link 1 ControlNet Link 2
- Controllers 1
- Important User Information 2
- Summary of Changes 3
- Table of Contents 5
- Chapter 3 6
- Chapter 4 7
- Chapter 5 7
- Appendix A 7
- Appendix B 7
- Appendix C 7
- Appendix D 8
- Appendix E 8
- Terminology 10
- Installing Your ControlNet 13
- PLC-5 Processor 13
- Identifying ControlNet PLC-5 15
- Processor Components 15
- Before You Install the 17
- Programmable Controller 17
- Estimated Battery Lifetimes 20
- Dispose of a Battery 20
- Setting the I/O Chassis 21
- Backplane Switches 21
- Configuration Plug 22
- Installing Keying Bands 22
- Selecting the DH+ Station 23
- Address of Channel 1A 23
- Specifying the Serial 24
- Interface of Channel 0 24
- Selecting the ControlNet 24
- Network Address of 24
- Channel 2 24
- Installing a Remote 25
- I/O Link 25
- Connecting to a 29
- ControlNet Network 29
- Connecting a 31
- Programming Terminal 31
- Serial Channel 32
- ControlNet Connection 33
- Serial Cables 34
- DH+ Programming Cables 35
- Remote I/O Cables 35
- ControlNet Cables 35
- Processor 39
- I/O Chassis 41
- . . .. . 43
- Using I/O Forcing Operations 45
- Housekeeping 46
- Logic Scan 46
- First Word 48
- PCSC Overflow Bit 48
- PCSC New Data Bit 48
- PCSC Enable Bit 48
- Understanding Scheduled 49
- Connection Types 49
- Understanding ControlNet 54
- I/O Mapping 54
- RPI Default = 4 x NUT 59
- I:010 6 O:010 2 63
- Using the ControlNet 69
- PLC-5 Processor in a 69
- ControlNet I/O System 69
- Tap (4 choices) 70
- 1786-TPR 70
- I/O System 72
- 1.5 system 73
- Understanding the ControlNet 75
- System Software 75
- I/O Configuration Utility 76
- Information 77
- ControlNet System 81
- Programming Your 81
- 1756-CNB 82
- ControlBus 82
- Using the ControlNet I/O 83
- Transfer Instruction 83
- Sending Continuous Messages 85
- Using ControlNet 86
- Immediate Data Input and 86
- Output Instructions 86
- IMMEDIATE DATA INPUT 87
- N11:232 232 87
- IMMEDIATE DATA OUTPUT 88
- N12:175 175 88
- Using Selectable Timed 89
- Interrupts with a Program 89
- Your ControlNet System 91
- Status Indicators 93
- Using the DH+/RIO 95
- Monitoring ControlNet 96
- Configuration and Status 96
- Processor Specifications 97
- AVERTISSMENT 100
- Processor Status File 101
- S:13-S:24 111
- S:26-S:35 112
- S:36-S:78 113
- S:79-S127 115
- B-16 Processor Status File 116
- ControlNet Instruction Set 117
- Immediate I/O Execution Times 118
- ControlNet I/O Map-Entry 119
- Status Words and 119
- Error Codes 119
- ControlNet I/O status file: 120
- ControlNet I/O status file 121
- Fault Codes 131
- Appendix F 133
- Numerics 137
- 2 Index 138
- Index 3 139
- 4 Index 140
- Index 5 141
- 6 Index 142
- Index 7 143
- 8 Index 144
- How Are We Doing? 145
- BUSINESS REPLY MAIL 146
- Rockwell Automation 148
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