Rockwell-automation 1771-OFE/B Analog Output Module User Manual Manuel d'utilisateur Page 66
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- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
7-2
Publication 1771Ć6.5.30 - November 1998
Table 7.A
Troubleshooting Chart
Condition Possible Cause Recommended Action
Green RUN indicator does not
come on.
No Power to Module
Bad internal fuse
• Check I/O chassis for power.
• Turn off power to I/O chassis. Remove
and reinsert module into chassis. Return
power to I/O chassis.
Red FAULT indicator is on
continuously with the
processor in program and
run modes.
Unsuccessful PowerĆUp
• EPROM Fault
• Checksum Error
• Cycle power.
• Replace faulty module if necessary.
Block transfers are not being
performed.
• Block Transfer
Instructions Programmed
Incorrectly
• Module has failed
selfĆdiagnostics.
• Check user program .
• Cycle power.
• Replace faulty module if necessary.
The module allows a five-word read block transfer for rudimentary
program or hardware debugging (Figure 7.2). If a read block
transfer request is for more or less than five words, the module will
not perform a read block transfer.
Figure 7.2
Word Assignment for Read Block Transfer
Decimal Bit 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Octal Bit 17 16 15 14 13 12 11 10 07 06 05 04 03 02 01 00
Word 1 Channel 1 DAC Input Data
2 Channel 2 DAC Input Data
3 Channel 3 DAC Input Data
4 Channel 4 DAC Input Data
5
Not
used
I/O
Reset
Reserved Data Valid
Important: The user program that utilizes the read block transfer
must make sure that bits 06 and 07 (the write enable
and read enable request bits) of the MCB are not set
simultaneously.
The first four words of the read block transfer show the actual 12 bits
of data sent to the module’s digital-to-analog converters (DACs).
The first four words in the read block transfer appear in 12-bit binary
format regardless of the module’s mode of operation (BCD or 12-bit
binary).
Read Block Transfer
Status Words
- 1
- 1
- Important User Information 2
- 3
- SOC-2 Summary of Changes 4
- Manual's Purpose 5
- Audience 5
- Vocabulary 5
- Manual Organization 5
- Related Products 6
- Product Compatibility 6
- Related Publications 6
- 7
- Chapter 4 8
- Chapter 5 8
- Chapter 6 8
- Chapter 7 8
- Specifications 9
- Block Transfer with 9
- MiniĆPLCĆ2 and PLCĆ2/20 9
- Processors 9
- Table of Contents 10
- Overview of the Analog Output 11
- How Analog Modules 13
- Communicate with 13
- Programmable Controllers 13
- Accuracy 13
- Chapter Summary 13
- 15
- Calculating Power 16
- Requirements 16
- Determine Module 17
- Location in the I/O Chassis 17
- Setting Module 17
- Configuration Jumpers 17
- • the module faults 19
- Install the Keying Bands 21
- Install the Module and Field 22
- Wiring Arm 22
- Connect the Wiring 23
- Ground the Chassis and 24
- Interpreting the Indicator 25
- Configuring Your Output 27
- Configuration Word 29
- Default Configuration 30
- Data Format 30
- Scaling Value Polarity 32
- Figure 3.3 33
- Procedure for Configuring 35
- Your Module 35
- 37
- Block Transfer 38
- Programming Ć PLCĆ2 38
- Family Processors Only 38
- PLC-2 Family Example Program 39
- Table 4.A 40
- Data Table Map 40
- Data Table MAP (128Ćword) 40
- Table 4.B 41
- PLCĆ2 Family Data Table Word 41
- Programming Ć PLCĆ3 42
- Figure 4.4 43
- Programming Ć PLCĆ5 44
- Other Programming 46
- Considerations 46
- Timer/Counter 48
- Accumulated Values 48
- System Expansion 49
- Recommendations Ć PLCĆ2 49
- Processors Only 49
- 51
- Calibrating Your Output 53
- Voltage Output Version 54
- (1771ĆOFE1) 54
- Figure 6.1 55
- Figure 6.2 55
- Figure 6.3 56
- Current Output Version 57
- (1771ĆOFE2) 57
- Channel Calibration 58
- Figure 6.5 59
- Figure 6.6 60
- Location of Resistor Pots 60
- Table 6.C 60
- Resistor Pots 60
- (1771ĆOFE3) 61
- Figure 6.7 62
- Diagnostics and 65
- Troubleshooting 65
- Read Block Transfer 66
- Status Words 66
- 69
- Appendix 71
- Rungs 2 and 3 72
- Rung Summary 72
- Setting the Block Length 73
- (Multiple GET Instructions 73
- Data Table Formats 75
- SignedĆmagnitude Binary 76
- Two's Complement Binary 77
- Table of Contents 80
- AllenĆBradley 81
- Publication Problem Report 81
- BUSINESS REPLY MAIL 82
- Support Services 83
- Worldwide representation 84
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