Rockwell-automation 1797-OE8H FLEX Ex HART Analog Modules User Manual Manual de usuario Pagina 51
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Publication 1797-6.5.3 - March 2006
Understand Configurable FLEX Ex Analog Module Features 2-21
HART Read Back Threshold
This bit delivers the percentage value, in steps of 1%, of the threshold for
forcing the HART read back indication. The maximum input signal deviation
for HART analog modules is 31%.
If there is no HART transmitter on the loop or if the loop is not in the
transmitter list, the function is switched off internally in the I/O module.
The values are:
• 0 = disabled (default)
• 1 to 4 = not supported from the I/O module (set to 5 internally)
• 5 to 31 = percentage threshold data (5 to 31%)
Chapter Summary
In this chapter, we told you about the FLEX Ex system and the analog I/O
modules, and how they communicate with programmable controllers. Move to
Chapter 3 to learn how to install your FLEX Ex analog module.
- FLEX Ex HART 1
- Analog Modules 1
- Important User Information 2
- Summary of Changes 3
- What’s Changed 3
- Summary of Changes 2 4
- Table of Contents 5
- Chapter 3 6
- How to Install Your FLEX Ex 6
- Table of Contents 3 7
- Table of Contents 4 8
- Table of Contents 5 9
- Table of Contents 6 10
- Table of Contents 7 11
- Table of Contents 8 12
- For Additional Information 14
- What This Chapter Contains 15
- What the FLEX Ex Analog 15
- I/O Modules Do 15
- How FLEX Ex Analog 16
- Modules Communicate 16
- Controllers 16
- Physical Features of Your 17
- Analog I/O Module 17
- Using Alarms on the 17
- 1797-IE8H Module 17
- Data Format Alarm Example 18
- Overrange Alarm 18
- Underrange Alarm 18
- Remote Fault Alarm 19
- Local Fault Alarm 20
- How to Use the 21
- HART Capabilities 21
- HART Implementation 21
- Overview 21
- HART Commands 22
- HART Target Tags 23
- HART Command Tags 24
- HART Initialize Tags 25
- HART Initialize Channel Tags 26
- Selecting the Correct Path 29
- Module Features 31
- Selecting a 1797-IE8H FLEX 32
- Ex Analog Input Module’s 32
- Operating Features 32
- High Low Error Level 33
- Input Filter Cutoff 33
- Data Format 34
- Data Formats and Error Ranges 36
- Selecting a 1797-OE8H FLEX 37
- Ex Analog Output Module’s 37
- Analog Digital State 38
- Analog Fault State Value 38
- Diagnostic Data error 40
- 11=data out of range 40
- Understanding Image Table 42
- Mapping and Bit/Word 42
- Descriptions 42
- 1797-IE8H and -OE8H 49
- Extended Configuration 49
- Data Table 49
- HART Status LEDs 50
- HART Status Inhibit 50
- 50/60 Hz Filter 50
- Before You Install Your 53
- Analog Module 53
- Compliance to European 54
- Union Directives 54
- Installation in Zone 1 55
- Installation in Zone 22 55
- Electrostatic Charge 55
- Removal and Insertion 56
- Under Power 56
- Install the Module 56
- Mount on a DIN Rail 57
- Panel/Wall Mount 59
- Label under here 61
- Wire the Terminal Base 62
- Connecting Wiring to the 63
- FLEX Ex I/O Analog 63
- ATTENTION 64
- Ground the Module 66
- ControlNet Network 69
- Using Programming 70
- Software in Your FLEX Ex 70
- Application 70
- About the ControlNet Ex 70
- Communication Over the 71
- FLEX Ex Backplane 71
- Unscheduled Data Transfer 72
- Module I/O Mapping 72
- I/O Structure 73
- Fault State Data 75
- Device Actions 75
- Calibrate Your Module 77
- When and How to Calibrate 78
- Your FLEX Ex Analog I/O 78
- Tools and Equipment 78
- 1797-IE8H Calibration 79
- Features 79
- Command Structure 80
- 2 Calibrate gain at 25 °C 81
- °C Channel-Mask 82
- 25 °C according to 83
- . During the 87
- 1797-OE8H Calibration 88
- Calibration) 96
- Evaluate the Application 99
- Define the Area 100
- Classification 100
- Select Protection 101
- Method(s) 101
- Match Field Devices and 101
- I/O Modules 101
- Optimize Power 105
- Distribution 105
- Assigning Power Supplies 106
- Safe Area 107
- Hazardous Area 107
- Chapter Summary 108
- Troubleshoot the FLEX Ex 109
- Analog I/O Modules 109
- 8 CHANNEL ANALOG OUTPUT 110
- Specifications 113
- Class I Division 1 Hazardous 114
- Specifications A-3 115
- Wiring Methods 116
- IMPORTANT 117
- A-6 Specifications 118
- Specifications A-9 121
- 1797-OE8H Output Module 122
- Specifications A-11 123
- A-12 Specifications 124
- FLEX Ex HART Module Commands 125
- Universal Commands 126
- Common Practice 127
- Commands 127
- Device-specific Commands 127
- Command 129 128
- Command 130 130
- Command 131 131
- Command 132 132
- Command 133 132
- Command 134 133
- Command 135 134
- Command 136 135
- Command 137 136
- Command 138 137
- Command 139 138
- Command 140 139
- Command 141 140
- Command 143 141
- Command 144 141
- Command 145 142
- Command 146 143
- Command 147 144
- Command 148 144
- Command 149 145
- Command 152 145
- Command 154 146
- Command 158 147
- Command 159 148
- Command 164 148
- Appendix 149
- What This Appendix 149
- Contains 149
- Message Structure 149
- Transaction Procedure 150
- Burst Mode (not supported) 150
- Preamble 151
- Start Character 151
- HART Address 151
- HART Command 152
- Byte Count 152
- Check Byte 152
- Response Code 153
- Background Information 165
- Configuration 166
- Analog Fault State 168
- Fault Mode 168
- Local Fault Mode 168
- Latch Retry Mode 169
- Analog/Digital Mode 169
- Digital Fault State 170
- Analog Fault State Values 170
- Digital Output Data 171
- Global Reset Bit 171
- Analog Output Data 171
- Diagnostic Status Data 172
- HART Rebuild Bit 172
- Fault Alarm 172
- HART Failure 173
- HART Readback 173
- HART Communication 173
- HART Transmitter 174
- Filter Cutoff 178
- Up/Down Bit 179
- High and Low Error Level 179
- Square Root Threshold 181
- Analog Input Data 181
- Local Fault 182
- Remote Fault 182
- Diagnostic Status 183
- Communication 185
- Differences Between 187
- Attributes and Assembly 187
- HART Frame Enhancements 190
- 2 192
- How Are We Doing? 193
- BUSINESS REPLY MAIL 194
- Rockwell Automation 196
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