描述
继电器控制线路是由许多真正的硬件继电器组成的。而PLC是由许多“软继电器”组成的,这些“继电器”实际上是存储器中的触发器,可以置“0”或置“1”。硬继电器的触点数有限,一般只有4至8对;而“软继电器”可供编程的触点数有无限对,因为触发器状态可取用任意次。
PACIFIC SCIENTIFIC 1.8º STEP MOTOR: MODEL# E41RLHTLNKNS
Pacific Scientific Servo Motor M/N R8AGENA-R2-NS-NV-00
PACIFIC SCIENTIFIC P2HNSXB-LNN-NS-02 STEPPER MOTOR NNB!
R43GENA-R2-NS-NV-00 PACIFIC SCIENTIFIC R43GENAR2NSNV00
Pacific Scientific PowerMax P21SNSXC-LN-NS-02 1.8º Mtr
Pacific Scientific H22NRHT-LNF-NS-00 Step Motor
Pacific Scientific R33 GENC-HS-ND-NV-00 Servo Motor
PACIFIC SCIENTIFIC SERVO MOTOR R43HENATSNFNV00, ENCODER
PACIFIC SCIENTIFIC E42HLFA-LSK-NS-03 STEP MOTOR NEW!!!
Pacific Scientific R32GMNP-R2-NS-NV-00 **NEVER USED**
PACIFIC SCIENTIFIC E31NRLT-LNF-NS-00 1.8 DEGREE STEP