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Analog modules
5.17 Diagnostics functions of analog modules
S7-400 Automation System Module Data
242 Reference Manual, Edition 09/2009, A5E00850736-06
5.17 Diagnostics functions of analog modules
Programmable and non-programmable diagnostic messages
We distinguish between programmable and non-programmable diagnostic messages.
You only obtain programmable diagnostic messages if you have enabled the diagnostics
using the relevant parameters. You perform parameter assignment in the "Diagnostics" tab
in
STEP 7
.
The analog module always provides non-programmable diagnostic messages, irrespective of
the enable state of diagnostics functions.
Reactions to diagnostic messages in STEP 7
Actions initiated by diagnostic messages:
● The diagnostic message is entered in the diagnostics of the analog module, forwarded to
the CPU and can be read out by the user program.
● The error LED on the analog module is lit.
● If you have set "Enable Diagnostic Interrupt" in
STEP 7
, a diagnostic interrupt is triggered
and OB 82 is called.
Reading diagnostic messages
You can read detailed diagnostic messages using SFCs in the user program (refer to the
appendix "Diagnostic data of signal modules").
You can view the cause of the error in
STEP 7
in the module diagnostics (refer to the
online
help for STEP 7
).
Diagnostic message in the measured value of analog input modules
All analog input modules return the measured value 7FFF
H
as a reaction to errors,
irrespective of parameter settings. This measured value indicates either overflow, error, or a
disabled channel.
Diagnostics using the INTF and EXTF LEDs
Some analog input modules indicate faults by means of their two fault LEDs INTF (internal
fault) and EXTF (external fault). The LEDs go out when all the internal and external faults
have been eliminated.
Refer to the specifications of the modules to find out which analog input modules have these
fault LEDs.
Diagnostic messages of the analog input modules
The table below gives an overview of the diagnostic messages for the analog input modules
with diagnostics capability.
You can find out which diagnostic messages are possible with which modules in the
Appendix entitled "Diagnostic Data of the Signal Modules".
- SIMATIC 1
- Legal information 2
- Preface 3
- Further Information 4
- Recycling and disposal 4
- Additional support 4
- Training center 4
- Technical support 5
- Table of contents 10
- Table of contents 11
- General specifications 21
- EMC directive 22
- Low voltage directive 22
- UL approval 23
- +$=/2& 24
- FM Approval 27
- Marine Approvals 27
- Pulse-shaped interference 29
- Sinusoidal interference 30
- System perturbation 31
- Additional measures 31
- Shipment of backup batteries 32
- Storing backup batteries 32
- General specifications 33
- Operating conditions 34
- Use with additional measures 34
- Reducing vibrations 34
- Climatic ambient conditions 35
- Test voltages 36
- Protection class 36
- Design of the racks 37
- 123456789101112131415161718 38
- Order number 39
- Design of the UR1 and UR2 39
- Suitable modules for UR2-H 41
- Design of the UR2-H 42
- Suitable modules for the CR2 43
- Design of the CR2 43
- Suitable modules for the CR3 45
- Design of the CR3 45
- Design of the ER1 and ER2 47
- Power supply modules 49
- Order numbers and function 51
- Redundant operation 51
- 3.3 Backup battery (option) 53
- Backup times 54
- Meaning of the LEDs 56
- Power supply modules 57
- INTF, 5 VDC, 24 VDC LEDs 60
- Overload at 24 V 62
- Overload at 5 V 62
- BAF, BATTF 62
- BAF, BATT1F, BATT2F 63
- Function 65
- Power connection 65
- '&9 81
- '$$$ 81
- '$$$ 83
- 4.1 Module overview 94
- 4.3.1 Parameters 96
- Reading diagnostic messages 99
- Overview 100
- Digital modules 102
- Introduction 103
- Enabling interrupts 103
- Diagnostic interrupt 103
- See also 104
- Hardware interrupt 104
- Hardware interrupt lost 104
- IEC 61131, type 1 and type 2 105
- EN 60947-5-2, 2-wire BEROs 105
- Features 106
- Digital modules 107
- 4.8.1 Features 110
- Parameter assignment 115
- Data register and bus control 121
- 4.10.1 Features 124
- 1FH00-0AA0) 130
- 1BH11-0AA0) 142
- 5EH10-0AB0) 146
- Changing fuses 149
- 1BL00-0AA0) 151
- 7BL00-0AB0) 155
- 1FF00-0AA0) 161
- LED control 162
- 5EH00-0AB0) 169
- (6ES7422-1HH00-0AA0) 174
- Analog modules 179
- 5.2 Module overview 180
- Analog modules 181
- 5.2 Module overview 181
- 5.2 Module overview 182
- 5.4.1 General information 184
- Measured value resolution 185
- Input ranges 186
- Two procedures 205
- 5.6.1 Introduction 208
- Operational limit 211
- Basic error limit 211
- Conversion time, channel 1 212
- Conversion time, channel 2 212
- Conversion time, channel 3 212
- Cycle time 212
- Use of smoothing 213
- Smoothing principle 213
- Example 213
- Settling time 214
- Response time 215
- Configuration in RUN (CiR) 216
- Non-isolated sensors 221
- Connecting voltage sensors 223
- Sensor supply voltage 224
- Thermocouple design 231
- Recommended compensating box 234
- Cables for analog signals 237
- 5.19.1 Features 248
- Setting the operating mode 254
- Parameters 254
- Measuring methods 255
- Unused channels 255
- Measuring ranges 256
- Default 256
- 5.20.1 Features 257
- Measuring range modules 267
- Measured value smoothing 269
- Defaults 273
- 5.21.1 Features 274
- 5.22.1 Features 284
- 5.23.1 Features 293
- Wire break monitoring 309
- 5.24.1 Features 311
- 5.25.1 Features 321
- Step response 329
- Bus control 335
- Interface modules 343
- Rules for connection 345
- Terminator 345
- Interface modules 347
- (6ES7 461-0AA01-0AA0) 348
- Setting/changing the number 349
- (6ES7461-1BA01-0AA0) 351
- (6ES7461-3AA01-0AA0) 355
- (6ES7461-4AA01-0AA0) 358
- Compatibility 360
- S5 interface IM 463-2 361
- S5 interface IM 463-2 363
- Interface selector switch 365
- Cable length selector switch 365
- Prepare the cable 366
- Plug in the cable 366
- Select the interface 366
- Select the cable length 366
- Setting the address area 369
- Specifications 375
- 8.1.1 Overview 377
- Communication services 379
- IM operating mode 380
- Mode selector 381
- Loadable firmware 381
- 8.2 Configuration 382
- 8.3.1 Connection options 383
- 8.3.2 Bus connector 383
- Connector pin assignment 384
- Required accessories 385
- Installing connectors 386
- Reusing fiber-optic cable 387
- 8.4 Specifications 389
- 8.4 Specifications 390
- 8.4 Specifications 391
- 9.1 Features 393
- Fan monitoring 394
- Example of a message concept 395
- Shield clamp 396
- (Side elevation 396
- Scale 1:1) 396
- Shielding clamps 397
- Installation 398
- Monitoring function 399
- Wiring 400
- Signaling concept 400
- Technical specifications 401
- RS 485 repeater 403
- Grounded or ungrounded 406
- Connection scheme 407
- Amplification of bus signals 408
- 10.5 Specifications 409
- 10.5 Specifications 410
- Modifiable parameters 411
- Further references 412
- Structure of data record 1 413
- This section 421
- Bytes 0 and 1 422
- Module types 422
- Accessories and spare parts 443
- Definition 447
- Electrostatic charging 448
- Ensure sufficient grounding 449
- Avoid direct contact 449
- List of abbreviations 451
- E.1 List of abbreviations 452
- List of abbreviations 453
- E.1 List of abbreviations 453
- Glossary 455
- Glossary 457
- Work memory 468
- Index 471
- SFC 55, 411 486
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