描述
对于两个重要输出量，不仅在PLC内部互锁，建议在PLC外部也进行硬件上的互锁，以加强PLC系统运行的安全性、可靠性。对于常见的AC220V交流开关类负载，例如交流接触器、电磁阀等，应该通过DC24V微小型中间继电器驱动，避免PLC的DO接点直接驱动，尽管PLC手册标称具有AC220V交流开关类负载驱动能力。
Fine Sodick I0016 Board IJC-02
Universal 1VPW Coil Winding Pull Type Machine
SIEMENS FXD63B225 ITE CIRCUIT BREAKER
5/8” CORRUGATED PLASTIC TUBING CABLE ORGANIZER 7000′
HONEYWELL C7012E1104 UV FLAME DETECTOR
HONEYWELL C7012A1145 UV FLAME DETECTOR
FOXBORO P0400QL DUAL FLOPPY DRIVE
79250504BVV CIRCUIT BOARD
HP 8554B Spectrum Analyzer with RF Section
ESI 262 DB62 Resistance Comparator and Decade
Brookfield RUF Viscometer
Astro Industries 10500G-3060 Lab tank 70PSI JAC
