Rockwell-automation 1747-DTAM-E,D17476.1 Data Table Access Module (DTA Manual de usuario Pagina 72
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8-12 Message Capability
Publication 1747-6.1
Application Example 1
Application example 1 uses two 18-word message instructions to
enter variable data for high and low limits of a machine process. It
also uses an 8-word message instruction to prompt you if data is not
entered. The 5/02 ladder logic program is shown below. The data
monitor displays for the message instructions and the user-defined
data files are shown on the following page. The procedure to display
the message is shown on page 8-16.
Example 1
0
I:1.0
0
MSG
READ/WRITE MESSAGE
Read/Write
Target Device
Control Block
Control Block Length
WRITE
485 CIF
N7:0
7
(EN)
(DN)
(ER)
1
17
(EN)
(DN)
(ER)
B3
MSG
READ/WRITE MESSAGE
Read/Write
Target Device
Control Block
Control Block Length
WRITE
485 CIF
N7:30
7
2
18
(EN)
(DN)
(ER)
B3
MSG
READ/WRITE MESSAGE
Read/Write
Target Device
Control Block
Control Block Length
WRITE
485 CIF
N7:60
7
3
CLR
CLEAR
Dest
B3:1
0000000000000
000
B3
20
4
END
18-word Write
Message instruction
for low level data
18-word Write
Message
instructions for high
level data
8-word Write
Message instruction
fornodataentry
Reset Message
acknowledge bits
Message trigger
input
Acknowledge Bit
from message in
rung 0
No-acknowledge
bits from
messages in
rungs 0 and 1
Operation Notes
Rung 0
Input instruction I:1.0/0 initiates the first message instruction.
This message prompts you to enter a value for the low range
of the machine process. The initial value indicates that a
minimum value of one should be entered. The Data Entry
Destination Address is N10:1. The Acknowledge Bit Address
is B3:1.0/1 or B3/17.
Rung 1
This input instruction B3/17, is the user-designated
acknowledge bit from the first message instruction. It is used
to initiate the second message which prompts you to enter a
value for the high range of the machine process. The initial
value indicates a maximum of 250 should be entered. The
Data Entry Destination Address is N10:2. The Acknowledge
Bit Address is B3:1.0/3 or B3/19.
Rung 2
Input instructions B3/18 and B3/20 are the user-designated
no-acknowledge bits from the previous message
instructions. If the module [ESC] key is pressed before
entering either or both values, the message will prompt you
that no value has been entered.
Rung 3
This Clear instruction is enabled every scan to reset the
user-defined acknowledge and no-acknowledge bits to zero.
Rung 4
This is the end of the user program.
- Data Table 1
- Access Module 1
- Allen-Bradley 1
- Important User Information 2
- Summary of Changes 3
- S-2 Summary of Changes 4
- Table of Contents 5
- Table of Contents v 7
- Who Should Use this 9
- Purpose of this Manual 9
- Contents of this Manual 10
- Related Documentation 11
- Common Techniques 11
- Used in this Manual 11
- Allen-Bradley Support 12
- Local Product Support 12
- Technical Product Assistance 12
- Data Table Access Module 13
- Overview 13
- Installation and Power Up 15
- 2-2 Installation and Power Up 16
- Installation and Power Up 2-3 17
- Connecting Your 18
- Equipment 18
- Installation and Power Up 2-5 19
- Module Configuration 20
- Installation and Power Up 2-7 21
- Access Port View 21
- Power-Up Sequence 22
- Module Setup Procedure 23
- Factory Default 24
- Settings 24
- Entering the Setup 25
- Selecting the 26
- Language 26
- Selecting the Node 26
- Setting the Baud Rate 27
- Setting the Auto 27
- Attach Function 27
- Backlighting the LCD 28
- Setting the Monitor 28
- Override Function 28
- Accepting Module 29
- Setup Parameters 29
- Using the Module 29
- 3-8 Module Setup Procedure 30
- AttachingtoaProcessor 31
- Auto Attach Procedure 32
- Attaching to a Processor 4-3 33
- Attachingtoa 34
- Password Protected 34
- Processor 34
- Monitoring and Modifying Data 35
- Logical Data File 37
- Addressing 37
- Backspace Function 38
- During Data File 38
- Address Entry 38
- Quick Access 39
- .1 40
- Entering Data File 41
- Addresses 41
- Entering Bit Addresses 41
- Entering Integer Addresses 42
- How to Change 43
- Displayed Data File 43
- Elements 44
- How to Change Data 46
- File Values 46
- How to Change Word Values 46
- 0000000000101000 49
- Quick Recall Functions 51
- Using Quick Recall 52
- Functions 52
- Clearing Quick Recall 53
- 6-4 Quick Recall Functions 54
- Processor Control Functions 55
- Changing the 56
- Processor to Program 56
- Viewing Processor 56
- Clearing Processor 57
- Transferring Memory 58
- Message Capability 61
- Programming the MSG 62
- Instruction 62
- 5/02 Control Block 62
- Configuration 62
- Message Capability 8-3 63
- 5/03 Control Block 64
- Message Capability 8-5 65
- 8-Word Message 66
- 16-Word Message 67
- 12-Word Message 68
- 13-Word Message 69
- 18-Word Message 70
- 1-Word Message 71
- Application Example 1 72
- Message Capability 8-13 73
- B3:1.0/1 74
- B3:1.0/3 75
- ENTER LOW RANGE 76
- ENTER HIGH RANGE 76
- NO VALUE ENTERED 77
- Application Example 2 78
- Message Capability 8-19 79
- ENTER NEW VALUE? 80
- Troubleshooting 81
- 9-2 Troubleshooting 82
- Module Problems 83
- Using the LCD 83
- Communication 84
- Problems Using the 84
- Troubleshooting 9-5 85
- 9-6 Troubleshooting 86
- Function Problems 87
- Troubleshooting MSG 88
- Instruction Error 88
- Troubleshooting 9-9 89
- 9-10 Troubleshooting 90
- Processor Faults 91
- 9-12 Troubleshooting 92
- Troubleshooting 9-13 93
- 9-14 Troubleshooting 94
- Specifications 95
- Characteristics 96
- Not accessible from the DTAM 97
- Address Structure 98
- Data File 3 - Bit 101
- Data File 4 - Timers 102
- Data File 5 - Counters 103
- Data File 6 - Control 104
- Data File 7- Integer 105
- Publication 1747-6.1 106
- Module Display Character Set 107
- Mounting Template 109
- D-2 Mounting Template 110
- 111
- I-2 Index 112
- I-4 Index 114
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