Siemens SIMATIC IPC427C Operations Instructions Page 61
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Functions
9.5 SRAM buffer memory
SIMATIC IPC427C
Operating Instructions, 10/2010, A5E02414743-03
61
9.5 SRAM buffer memory
For applications to be able to store data following a power failure, the motherboard features
a battery-buffered CMOS-RAM. If the supply voltage fails longer than 5 ms, this is indicated
by the DC FAIL signal.
Enough time is provided for copying data to the buffered RAM that 256 KB can be saved
with a full configuration.
A maximum 2048 Kb memory window is displayed via a PCI address register. The base
address is initialized by the BIOS.
A corresponding function is implemented there for using the CMOS-RAM under WinAC RTX.
NOTICE
If replacement of the battery takes longer than 30 seconds, the data saved in the CMOS
RAM and in the buffered SRAM is lost.
9.6 Battery monitoring
The installed buffer battery has a service life of at least 5 years. The status can be checked
with two-tier battery monitoring. The information can be read from an I/O register and
evaluated.
When the first warning level is reached, the remaining service life of the battery for buffering
CMOS data and buffered SRAM is at least 1 month.
9.7 Operation without monitor and keyboard
The device can be operated without a monitor and keyboard. The device startup is
guaranteed without these peripherals. A USB keyboard and mouse and an analog CRT
monitor can be later connected for diagnostics.
A digital DVI monitor cannot be activated unless the Windows Embedded Standard /
Windows XP Professional / Windows 7 Ultimate operating system has completed its boot
operation.
- SIMATIC IPC427C 1
- SIMATIC 1
- Industrial PC 1
- SIMATIC IPC427C 1
- Table of contents 3
- Table of contents 5
- Introduction 9
- History 10
- Safety Instructions 11
- Battery 12
- ESD directives 12
- Description 13
- 3.3 Features 14
- Description 15
- 3.3 Features 15
- 3.6 Design 19
- Ports and power supply 20
- 3.6 Design 21
- 3.6.3 Operator controls 22
- 3.6.4 Status displays 23
- 3.6 Design 24
- Application planning 25
- Examples for COA-Labels 26
- Application planning 27
- Installing/mounting 29
- 5.2 Mounting information 31
- 5.3 Mounting the device 31
- 5.4 Mounting on DIN rails 31
- 5.4 Mounting on DIN rails 32
- Installing/mounting 33
- 5.6 Upright mounting 35
- 5.6 Upright mounting 36
- Connecting 37
- Connecting 39
- 6.4 USB strain-relief 40
- 6.5 PROFINET strain relief 41
- 6.5 PROFINET strain relief 42
- Commissioning 43
- Requirements 44
- Switch off the device 45
- Change system language 46
- Ultimate 49
- 7.5.1 Commissioning - guide 50
- 8.1 Overview 51
- 8.2 PROFINET 52
- 8.2 PROFINET 53
- 8.2 PROFINET 54
- Functions 55
- 9.1.3 Watchdog (WD) 56
- WD monitoring times 57
- Purpose and function 57
- Set EWF 57
- Configuring FBWF 59
- 9.4 HAL tool 60
- 9.5 SRAM buffer memory 61
- 9.6 Battery monitoring 61
- Preparation 63
- Open the device 63
- 10.2 Memory expansion 64
- Installing a memory module 65
- 10.3.1 Notes on the modules 66
- Mounting PCI-104 or PC/104 67
- modules 67
- ② and secure it 68
- Memory expansion options 69
- ① of the module 70
- ① and remove 72
- Maintenance and Service 75
- Removing drives 76
- Installing a drive 77
- Disposal 78
- Replacing the battery 79
- Reconfiguring the BIOS Setup 79
- Restoring the factory state 80
- Maintenance and Service 81
- Partition setup 83
- Partitioning the hard disk 88
- Partitioning the SSD 88
- Reduce partition 92
- Increase partition 92
- 11.5 Installing updates 94
- 11.6 Data backup 95
- 11.7 CP 1616 onboard 95
- 11.7 CP 1616 onboard 96
- 12.1 Boot error messages 97
- 12.1 Boot error messages 98
- Troubleshooting/FAQs 100
- Technical specifications 101
- 14.1 General specifications 102
- Technical specifications 103
- Dimension drawings 107
- Dimension drawings 109
- Detailed descriptions 115
- 16.1.3 External ports 116
- 16.1.3.2 COM1/2 117
- 16.1.3.3 DVI-I 117
- /(' /(' 118
- 16.1.3.5 USB 119
- 16.1.3.6 PROFIBUS 119
- 16.1.4 Internal ports 121
- 16.1 Internal components 122
- 16.2 BIOS Setup 123
- 16.2.2 Starting BIOS Setup 124
- Menu layout 125
- 16.2.4 Main menu 126
- System time and date 127
- 16.2 BIOS Setup 128
- Detailed descriptions 129
- 16.2 BIOS Setup 129
- 16.2.5 Advanced Menu 132
- 16.2.6 Security menu 135
- 16.2.7 Boot menu 136
- 16.2.8 Version menu 139
- 16.2.9 Exit Menu 140
- BIOS Setup default settings 141
- 16.3 System resources 143
- 16.3 System resources 144
- 16.4 I/O Address Areas 145
- Watchdog trigger register 146
- Meaning of the bits 147
- 16.5.1 Introduction 149
- CP 1616 onboard as IO device 150
- 16.5.2 Firmware Loader 151
- Configuring 153
- Appendix 155
- DIN ISO 9001 certificate 156
- Software License Agreement 156
- A.3 Service and support 157
- A.3 Service and support 158
- ESD guidelines 159
- B.1 ESD Guidelines 160
- List of abbreviations 161
- C.1 Abbreviations 162
- List of abbreviations 163
- C.1 Abbreviations 163
- Glossary 167
- Glossary 169
- SIMATIC IPC427C 180
- Index 181
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