GE WES5123-1200应用DCS系统燃机组件电源通讯备件
¥2250.00
DL-1200/RTU应用设备工控PLC控制系统电力调制解调器
¥2250.00
GE PRG-MODEM 设备工控PLC控制系统电力通讯DCS板卡
¥2250.00
GE WES5162 应用DCS系统黑色框架备件多系列组件
¥2250.00
GE WES5123-2600 系列DCS系统燃机组件电源通讯备件
GE WES5123-2600 系列DCS系统燃机组件电源通讯备件
D20系统从BootROM初始化。它检查并验证BootROM的内容，然后初始化系统硬件和各种I/O设备。如果在内存中发现任何错误或缺陷，系统要么关闭到最小运行状态，要么在出现严重缺陷时完全关闭。在运行初始诊断例程后，启动代码将操作系统代码下载到RAM中，以便更快地访问。从这一点开始，所有常驻固件和提供的自定义应用程序都从32位宽RAM或32位宽闪存运行。系统和应用程序数据库存储在NVRAM中。设备驱动程序D20使用两个通信设备驱动程序：•八端口串行I/O芯片，通过八个串行端口管理输入和输出。•HDLC控制器芯片（双端口），它构成D20ME和D20 I/O外围设备之间高速D.20链路的一部分。68K监视器功能监视器功能包括调试工具，用户可以通过PC、带键盘的VT100终端或通过telnet远程访问。监控功能包括内存检查、转储和编辑、设置断点、单步模式、通信端口环回测试、标记和空间调制解调器调整、CPU使用和进程分析任务间通信和同步由一个高效的专用功能组控制•使用增强的、高效的***算法进行动态内存分配和回收•通过来自外部时基的服务调用进行实时时钟控制。实时时钟：−保持日历时间−执行时间切片，允许进程暂停−为其他服务调用提供超时选项•不需要直接内存访问支持•高效的实时响应能力
D20/D200 Main Processor Specifications
2 MB Flash memory
2 MB SRAM (incl. 512 K battery back up)
512 KB BootROM
Program memory checksums
RAM test
CPU/Memory
Self Diagnostics
GE Information
Table 4 D20/D200 Main Processor Specifications
32-bit Freescale 68030 microprocessor
40 MHz MPU clock
Real-time clock, 1.0 ms resolution accurate to ±2.0 ppm
The D20ME contains two types of firmware: BootROM and flash applications. BootROM
contains the software needed to start up a D20 and diagnostic applications. Application software
consists of a base system that includes the operating system, hardware-dependent software, and
applications that are modular and hardware-independent so they can run on multiple platforms
(D20, D25 and iBOX, for example).
2.2.3.1 BootROM
GE WES5162-9101 系列DCS系统燃机组件电源通讯板
BootROM firmware is stored on an EPROM chip. The following types of programs are stored as
BootROM firmware:
• Operating system
• Boot-up (reset) code
• Device drivers
• IRQ controller initialization
• Interrupt service procedures
• Monitor functions
• Root process
• Watchdog task
Operating System
The D20ME operating system is pSOS
kernel, with the following features:
• Integrated, multi-tasking with a structured efficient superv***ry layer
• Priority scheduling of processes in coordination with other tasks. User applications are
partitioned into sets of processes
GE D20 EME
GE WESDAC D20ME
GE D20 EME 10BASE-T
GE D20 MIC 10BASE-T
GE WES13-3
GE WES5120 5120-1506
GE WES5120 5120-1106
GE WES5302-150
GE WES5302-111
GE WESCOM D200 VME
GE D20 EME的框架
GE WES5162-9101
GE WES5123-2600
GE WES5123-1200
GE DL-1200/RTU
GE PRG-MODEM
GE WES5162黑色框架
LAETUS LLS570-05
EATON XV-440-10TVB-1-13-1
DANAHER S21260-SRS
NI SCXI-1000
NI SCXI-1520
NI SCXI-1125
NI SCXI-1127
GE WES5123-2600 系列DCS系统燃机组件电源通讯备件
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