描述
小规模PLC控制系统:单机或者小规模生产过程，控制过程主要是条件、顺序控制，以开关量为主，并且I/O点数小于128点。一般选用微型PLC,如SIEMENSS7-200等。
中等规模PLC控制系统:生产过程是复杂逻辑控制和闭环控制，I/O点数在128——512点之间。应该选用具有模拟量控制、PID控制等功能的PLC，如SIEMENSS7-300等。
RELIANCE ELECTRIC RPM III DC MOTOR 30 HP
Reliance Electric 2 Axis Servo Controller 57C422B
Expedited shipping available
RELIANCE ELECTRIC 16 BIT REGISTER OUTPUT MOD 45C-381B
RELIANCE ELECTRIC 0-51865-1 NEW PC BOARD 0518651
NEW Reliance 78092-1R Starter Contactor 780921R NIB
One-day shipping available
Dodge/Reliance Gear Reducer with Motor 1808M3A
Dodge APG Gear Reducer Size 1808M3A
RELIANCE ELECTRIC R-NET PROCESSOR 45C202A
APV Industrial Pump w/ Reliance 1HP motor
Reliance 40HP 100/50A Motor
Reliance/Netco 5 HP Mixer (MX1048)
Reliance MAXPAK Plus Spindle Drive 801429-21TB CNC
RELIANCE ELECTRIC AUTOMAX CONTROL SYSTEM- 57C-332A
RELIANCE ELECTRIC 805427-IT LINE SCALING UNIT 550/575VA
Reliance Electric 3HP GV3000 Sensorless AC Drive 3V2160
