描述
PLC内有很多辅助继电器。辅助继电器的线圈与输出继电器一样,由PLC内各软元件的触点驱动。辅助继电器的动合和动断触点使用次数不限,在PLC内可以自由使用。但是,这些触点不能直接驱动外部负载,外部负载的驱动必须由输出继电器执行。在逻辑运算中经常需要一些中间继电器作为辅助运算用。这些元件不直接对外输入、输出,但经常用作状态暂存、移位运算等。它的数量比软元件X、Y多。内部辅助继电器中还有一类特殊辅助继电器,它有各种特殊功能,如定时时钟、进/借位标志、启动/停止、单步运行、通信状态、出错标志等。FX2N系列PLC的辅助继电器按照其功能分成以下三类。
Ref: ABB TAYLOR MOD 300 HIGH SPEED COUNTER
ABB TAYLOR MOD 300 HIGH SPEED COUNTER
Ref: ABB TAYLOR MOD 300 HIGH SPEED COUNTER
ABB TAYLOR MOD 300 HIGH SPEED COUNTER
Ref: ABB TAYLOR MOD 300 HIGH SPEED COUNTER
ABB TAYLOR MOD 300 HIGH SPEED COUNTER
Ref: ABB TAYLOR MOD 300 HIGH SPEED COUNTER
ABB TAYLOR MOD 300 HIGH SPEED COUNTER I/O MODULE
Ref: ABB TAYLOR MOD 300 HIGH SPEED COUNTER I/O MODULE
TAYLOR ABB MOD 300 VIDEO MODULE 6008BZ10000
Ref: TAYLOR ABB MOD 300 VIDEO MODULE 6008BZ10000
TAYLOR ABB MOD 300 SERIAL I/O MODULE 6007BG10000
Ref: TAYLOR ABB MOD 300 SERIAL I/O MODULE 6007BG10000
ABB TAYLOR MOD 300 Current Source Analog In/Out
Ref: ABB TAYLOR MOD 300 Current Source Analog In/Out
KENT TAYLOR, ABB MFE4ER136111,TRANS FLOW MAGMaster,Used
Ref: KENT TAYLOR, ABB MFE4ER136111,TRANS FLOW MAGMaster,Used
ABB Kent Taylor Commander 200 C202A30001U Controller
Ref: ABB Kent Taylor Commander 200 C202A30001U Controller
TAYLOR ABB MOD 300 D/M MODULE 6009BZ10000
Ref: TAYLOR ABB MOD 300 D/M MODULE 6009BZ10000
ABB/KENT TAYLOR COMMANDER 310 CONTROLLER C310/0010/STD
Ref: ABB/KENT TAYLOR COMMANDER 310 CONTROLLER C310/0010/STD
ABB KENT-TAYLOR PXR10523000088021 FULSCOPE PXR105*XLNT
Ref: ABB KENT-TAYLOR PXR10523000088021 FULSCOPE PXR105*XLNT