描述
继电器控制逻辑使用了大量的机械触点，连线也多，可靠性和可维护性差。而PLC采用微电子技术，大量的开关动作由无触点的半导体电路来完成，PLC还配有自检和监督功能，可靠性和可维护性好。
Parker Model 85 1/4″ ANPT PORTS BALSTON NEW
X-Rite DTP22 Digital Swatchbook Spectrophotometer used
lot 5000 IRC 2R21-F CHP11002R21F LF POWER RESISTORs NEW
Wartsila spare part INDICATOR VALVE with Flange
Lot of 20 RSA SecurID Tokens with seeds till 4/30/2013
INFRANOR SMTBS220-08 AMPLIFIER *NNB*
INFRANOR SMTBD1-220/04 USPP SMTBD122004
INFRANOR SMT-BD1 SERVO CONTROL SMTBD1 SMTBD1/1H 220/17W
Infranor Mavilor M0 2000T MS Series Servo Motor MO2000T
INFRANOR SMVE-2410 USPP SMVE2410
INFRANOR SMVEN-2410-031 USPP SMVEN2410031
INFRANOR SMVEN-2420 USPP SMVEN2420
Infranor SMTBM-20A SMTBD1 220/8 Servo Controller NICE
