德国WEST控制器
WEST控制器分组合逻辑控制器和微程序控制器，两种控制器各有长处和短处。WEST微程序控制器设计方便，结构简单，修改或扩充都方便，修改一条机器指令的功能，只需重编所对应的微程序；要增加一条机器指令，只需在WEST控制存储器中增加一段微程序。WEST组合逻辑控制器又称硬布线控制器，由逻辑电路构成，完全靠硬件来实现指令的功能。
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Process controller
WEST 6170+/8170+/4170
Remote Setpoint Option 
Modbus Communications
Transmitter Power Supply
Open Loop Valve Control with or without Position Indication
Jumperless Configuration
Improved 'Plus Series' Interface 
Available in 1/16 DIN, 1/8 DIN and 1/4DIN Formats
Programmable digital process controller
CAL 9500P West Control Solutions
Full PID auto-tuning process controller
Total of 3 outputs, from 4-20mA, 0-5v, 0-10v, SSR drive, relay
Input options:
Thermocouple
2 or 3 wire PT100
0-50mV, 0-5V, 0-10V, 0-20mA, 4-20mA
Alarms with 5 options
Heat-cool operation
Programmer operation
Sleeve mounting for easy maintenance
IP66 protection from front panel
CE, UL & CSA approvals
3-year warranty
Monitoring and configuration software option
RS232/485 options, Modbus RTU protocol