描述
PLC控制系统的程序设计要点。PLC控制系统I/O分配，依据生产流水线从前至后，I/O点数由小到大;尽可能把一个系统、设备或部件的I/O信号集中编址，以利于维护。定时器、计数器要统一编号，不可重复使用同一编号，以确保PLC工作运行的可靠性。
Pacific Scientific: SC753A- Servo 040-08 Controller
PACIFIC SCIENTIFIC 1.8º STEP MOTOR: MODEL# E41RLHTLNKNS
EK-677 PACIFIC SCIENTIFIC 1.8 STEP SERVO MOTOR
NEW PACIFIC SCIENTIFIC SERVO CONTROLLER MODEL SC402-010
SC421-002-T3 IMEC PACIFIC SCIENTIFIC – 1 YEAR WARRANTY
PACIFIC SCIENTIFIC SC320 SERVO AMPLIFIER
PACIFIC SCIENTIFIC VDE0530-S1 STEPPER MOTOR
Pacific Scientific S22GNNA-RNNM-0 Servo Motor Rebuilt
PACIFIC SCIENTIFIC 6415-001-C-N-K STEPPER DRIVE *XLNT*
Pacific Scientific SRF3752-4984 Motor w/ Kebco =
PACIFIC SCIENTIFIC SC403002 SERVO CONTROLLER
