Rockwell-automation 1771-OFE/B Analog Output Module User Manual Manuel d'utilisateur Page 34
- Page / 84
- Table des matières
- DEPANNAGE
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
3-8
Publication 1771Ć6.5.30 - November 1998
If you do not wish to scale a particular channel, set the scaling values
as shown below.
If your range is:
Set Maximum
Scaling Value to:
Set Minimum
Scaling Value to:
4Ć20mA
1Ć5V 4095 0000
0Ć10V
+10 to Ć10V 4095 Ć4095
1
1
This also requires you to set the appropriate sign bit in the configuration word for the minimum
scaling value.
For example, suppose you choose the 1 to 5 volt range and BCD
data format for your module. You have a thermocouple input that
reports a temperature between 100
o
C and 900
o
C back to your
processor. You would like this input temperature scale to correspond
to an output meter scale.
You would enter the following minimum and maximum scaling
values into Words 6 and 7 of the write block:
Meter Scale Value Scaled Value Output Voltage
Unscaled
Value (BCD)
Meterscale 100% 900
o
C 5.0V 4095
700
o
C 4.0V 3072
Example:
Word 6 = 0100
Word 7 = 0900
500
o
C 3.0V 2048
Example:
Meterscale 31%
Meterscale 25%
350
o
C
300
o
C
2.25V
2.0V
1280
1024
Meterscale 0% 100
o
C 1.0V 0
If the processor sends a data value to the module that corresponds to
350
o
C, the value is scaled to the 100
o
C to 900
o
C range and the
corresponding output voltage for that channel is 2.25 volts, which
would position the scale accordingly at 31% of full scale.
- 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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