Siemens PC 670 Manuel d'utilisateur Page 140
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- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
Hardware Information
Release 04/02
7-8
Panel PC 670 Computing Unit, Equipment Manual
7.4.4 Watchdog (WD)
Function
The watchdog monitors the execution of a program. The purpose of the WD is to
report a program crashing to the user by means of different reactions.
After switching on the computing unit or after a HW-RESET (cold start) the
watchdog remains in standby, i.e. no WD reaction is activated and the RUN-LED
remains switched off. If the watchdog is activated (by driver or SOM program) the
Run LED is green.
WD-Reaktionen
If the WD is not retriggered within the set time (by driver or SOM program), the
following reactions are triggered:
Reaction Options
RUN LED switches from green to red Always
Acknowledge WD Always
Initiate reset on the computing unit Adjustable
IRQ an die Rechnereinheit absetzen Adjustable
SOM application is displayed Adjustable
The reactions you want to have triggered can be set by drivers or the SOM
program.
WD monitoring times TWD
The monitoring times can be adjusted in increments of one second over the range
from 3 to 255 seconds.
Note
If the watchdog time is modified after the watchdog has been activated – in other
words, while the watchdog is running – the watchdog will be retriggered as a
result!
- Safety Guidelines 2
- Qualified Personnel 2
- Correct Usage 3
- Trademarks 3
- Impressum 3
- For your notes 4
- Documentation 5
- Notation 6
- Training Center 8
- Other Sources of Assistance 8
- Contents 12
- Product Overview 13
- Computing unit 14
- Installation 14
- Constructional designs 14
- Software equipment 15
- 1.2 Safety Notes 16
- Mains supply 17
- Country-Specific Notes 18
- Batteries 19
- ESD guidelines 19
- Area of use Requirements on 20
- DIN ISO 9001 certificate 21
- Australia 24
- AS/NZS 3548 Norm 24
- Chapter Overview 25
- Unpacking the computing unit 26
- Authenticity” 26
- Measures for equipotential 31
- 2.4 Transport 33
- Computing Unit 35
- 3.1 View of Interface Side 36
- 3.2 View of Drive Side 39
- Figure 3-3 Printer Connection 40
- PS/2 mouse connection 41
- Using a mouse 41
- Serial mouse connection 42
- PS/2 Keyboard connection 42
- USB device connection 43
- 3.4 Working with PC Cards 44
- Installation von PC cards 46
- 3.5 Drives 47
- 3.5.1 Floppy disk drive 47
- 3.5.2 LS240 drive 47
- Handling LS240 drive disks 48
- 3.5.3 Hard disk drive 50
- 3.6 Backup Battery 51
- Point-to-point connection 52
- (Socket) 53
- Connection 56
- MPI/PROFIBUS-DP network 57
- How the network functions 58
- Hardware requirements 58
- Ethernet 59
- 3.11 Connection Using Windows 59
- Maintaining and Extending the 61
- 4.1 Opening the Unit 62
- 4.1.1 Conditions 62
- Before opening the device 63
- Screws on the housing cover 64
- 4.1.4 Motherboard 66
- Components on the motherboard 67
- Standard memory 68
- Battery voltage too low 70
- Replacing the battery 70
- Changing SETUP 71
- Notes on the boards 72
- Note on long PCI cards 73
- Slots for expansion boards 76
- Module retainer plate 76
- Fixing screws 77
- CD-ROM drive with cover 79
- LS240 drive fixing screws 81
- Unit fan Plastic rivets 85
- 4.10 Processor Upgrade 86
- 4.11 Reset button 87
- BIOS SETUP Program 90
- Incorrect BIOS Data 90
- BIOS SETUP menus 90
- Menu items 92
- 5.1.1 Menu Main 93
- Field Type 95
- Multi Sector Transfer field 96
- LBA Mode Control field 96
- 32 Bit-IO field 96
- ”Memory Cache” Submenu 97
- Submenu ”Boot Options” 98
- Submenu ”Keyboard Features” 100
- Submenu ”Hardware Options” 101
- Release 04/02 102
- 5.1.2 Menü Advanced 103
- PCI Configuration Submenu 106
- ”PCI Devices” Submenu 106
- “PCI IRQ line” Field 108
- 5.1.3 Menü Security 110
- 5.1.4 Menu Power 112
- 5.1.5 Menu Boot-Sequence 113
- 5.1.6 Menu Version 115
- 5.1.7 Menu Exit 116
- 5.1.8 Setup default settings 117
- Fault Diagnosis 121
- Fault screen 122
- Cause/Remedy 123
- 6.6 USB Device Does Not Work 125
- Error messages 126
- Special codes 128
- POST codes 129
- Hardware Information 133
- Basic system 134
- S potentially isolated DP12 * 136
- S 12MBaud 136
- 7.3 System Resources 137
- 7.4 Monitoring Functions 138
- 7.4.1 Overview 138
- Temperature monitoring 139
- 7.4.4 Watchdog (WD) 140
- 7.4.5 Fan monitoring 141
- 7.5 Interfaces 142
- 7.5.1 External interfaces 142
- Parallel interface LPT1 145
- PS/2 mouse interface 146
- USB interface 147
- MPI/DP interface 148
- Figure 7-8 Ethernet port 149
- VGA interface 150
- Display port (CMOS, X420) 151
- Display port (LVDS), X400 153
- Interface to wiring backplane 157
- Allocation of IDE intefaces 160
- Connection of an LS240 drive 162
- SV connection for hard disk 163
- Connection for CPU fan 163
- Connection for device fan 163
- Connection for buffer battery 163
- 7.6 Wiring Backplane 164
- 7.6.2 Pin assignmentI SA slot 164
- 7.6.3 Pin assignment PCI slot 166
- 7.7 Power supply (AC and DC) 169
- 7.8 Connecting cables 170
- Distributed configuration 171
- 8.1 Description 172
- 8.1.2 Dimensions 173
- 8.1.3 Mounting 173
- 8.2 Cable connection 174
- 8.3 Spare parts 174
- 8.4 Technical data 174
- Transmitter housing 175
- Technical Data 177
- ESD Guidelines 181
- B.1 What does ESD mean? 182
- Charging 183
- Avoid direct contact 184
- SIMATIC HMI Documentation 185
- Glossary 189
- Glossary-6 194
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