描述
本指令使用的操作数有：01000~01915、20000~25515、HR0000~HR1915，其功能相当于锁存器，当置位端（S端）条件为ON时，KEEP继电器一直保持ON状态，即使S端条件变为OFF，KEEP继电器也还保持ON，，直到复位端（R端）条件为ON时，才使之变OFF，KEEP指令主要用于线圈的保持，即继电器的自锁电路可用KEEP指令实现。若SET端和RES端同时为ON，则KEEP继电器优先变为OFF。锁存继电器指令编写必须按置位行（S端），复位行（R端）和KEEP继电器的顺序来编写。
20 HP RELIANCE ELECTRIC VARIABLE FREQUENCY CONTROLLER
20 HP RELIANCE ELECTRIC VARIABLE FREQUENCY CONTROLLER
RELIANCE ELECTRIC MODEL TR SUPER RPM DC MOTOR 20 HP
RELIANCE ELECTRIC 0-49004 NSFP 049004
RELIANCE ELECTRIC 0-51446 NSFP 051446
REMANUFACTURED RELIANCE FIELD SUPPLY 0-51893-4 51893-4
Reliance 60 HP Electric Motor
1 NIB RELIANCE ELECTRIC 0-57407-4J 0574074J PROCESSOR
MODULE
1 NIB RELIANCE ELECTRIC 0-57050 057050 PRINTED CIRCUIT
RELIANCE ELECTRIC 0-52808-2 NSPP 0528082
RELIANCE ELECTRIC 1AC2001U NSFP 1AC2001U
