Description
GE IS420UCSBH1A
GE IS420UCSBH1A
GE IS420UCSBH1A
GE Fanuc 90-30系列PLC Modbus RTU 主站通讯用户手册（中文）说明了Modbus® RTU 主站的操作。
Modbus 串行通讯协议是一项开放标准，用于PLC之间以及相关设备间的数据通讯串行通讯,串行通讯协议是一种开放的 数据通讯标准 。 Modbus 串行通讯标准提供两种传输模式，一种是使用专用的可打印字符 (Modbus ASCII), 另一种是使用二进制数 (Modbus RTU)。
90™-30 系列中的IC693CPU363 以及 VersaMax® 的CPU 模块 IC200CPU001, IC200CPU002, IC200CPU005 和IC200CPUE05目前均支持Modbus RTU 主站通讯
indicators of basic unit pib02f:
CPU :Intel 80960HT25/75
32-bit RISC superscalar processor with operation speed of 150 MIPS
4 MB FLASH-EPROM
EEPROM，serial， 16 Kbit
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Ram 8 MB (with error check and correction function, abb patent)
16 K internal cache (CPU cache RAM)
Ram backup battery (matchdog, optional redundancy)
Equipment internal temperature monitoring
Watchdog
I/0 sweeping cycle: configurable.
Time required to process 1000 IL (instructions):
< 1.0 ms (processing binary and 16 bit arithmetic instructions)
<2ms (processing fixed-point arithmetic instructions)
< 1.5ms (processing 32-bit floating-point arithmetic instructions)
Bthernet network card ei801f/ei802f/ei803f
The industrial Ethernet network card provides communication with the system network diginet s (iee802.3 Ethernet standard)
Interface.
Basic characteristics:
1ee802.3 Ethernet standard
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Ei801f provides 10base2 thin cable communication interface
Ei802f provides 10BASE5 thick cable connection (through AUI interface)
Ei803f provides 10Base-T twisted pair communication interface
32-bit data bus, 100 mb/s
DMA (direct memory access) mode main memory ram, corresponding CPU operating load <4%
Optional ram backup battery
Fieldbus interface replacement card
