1756-N2/ABPLC模块
所谓顺序控制是指生产设备及生产过程，根据工艺要求按照逻辑运算、顺序操作、定时和计算数等规则通过预先编制的程序，在现场输入信号（包括开关量、模拟量）的作用下，执行机构按预定程序动作，实现以开关量为主的自动控制。我厂PLC的设计安装就是根据这一原则来实现的。其输入主要是靠按钮、行程开关、限位开关、动断触点等开关量为主的控制、信号。输出为继电器、电磁阀等驱动元件。PLC内部控制部分有定时器、计数器、中间继电器等元器件以及许多的常开、常闭触点 。而传统的顺序控制是由继电器控制屏来实现的，由于设备体积大、功耗高、动作速度缓慢、接线复杂、通用性、灵活性差、维护工作量大、故障频发率高而导致可靠性差，没有计算和储存功能，而PLC控制系统克服了继电器控制的弱点，把计算机技术与继电器控制有机地结合起来，为工业自动化提供了十分完美的现代化控制装置，其*性主要表现在：
1756-N2/ABPLC模块
1756-IB32 VDC INPUT 32PTS
1756-IC16 VDC INPUT 16PTS
1756-IF16 ANALOG INPUT-CURRENT/VOLTAGE 16PTS
1756-IF6I ISOLATED ANALOG INPUT-CURRENT/VOLTAGE 6PTS
1756-IF8 ANALOG INPUT-CURRENT/VOLTAGE 8PTS
1756-IH16I VDC ISOLOTED INPUT 16PTS
1756-IM16I VAC ISOLATED INPUT 16PTS
1756-IN16 VAC INPUT 16 PTS
1756-IR6I ISOLATED RTD INPUT 6PTS
1756-IT6I ISOLATED THERMOCOUPLE/MV INPUT 6PTS
1756-IV16 VDC SOURCING INPUT 16PTS
1756-L1 LOGIX5550 PROCESSOR, 64KBYTE USER MEMORY
1756-L1K CONFORMALLY COATED LOGIX 5550 PROCESSOR W/160KBYTE BASE MEMORY
1756-L1M1 LOGIX5550 PROCESSOR, 512KBYTE USER MEMORY
1756-L1M1K CONFORMALLY COATED LOGIX 5550 PROCESSOR W/512KBYTE BASE MEMORY
1756-L1M2 LOGIX5550 PROCESSOR W/ 1M BYTE EXPANSION MEMORY
1756-L1M2K CONFORMALLY COATED LOGIX5550 PROCESSPR W/1MBYTE EXPANSION MEMORY
1756-L1M3 LOGIX5550 PROCESSOR WITH 2MBYTE EXPANSION MEMORY
1756-L1M3K CONFORMALLY COATED LOGIX5550 PROCESSPR W/2MBYTE EXPANSION MEMORY
1756-M02AE 2-AXIS MOTION MODULE
1756-M08SE 1756 8 AXIS SERCOS SERVO MODULE
1756-M1 LOGIX5550 512KBYTE EXPANSION MEMORY
1756-M1K CONFORMALLY COATED LOGIX5550 EXPANSION MEMORY
1756-M2 LOGIX5550 1MBYTE EXPANSION MEMORY
1756-M2K CONFORMALLY COATED LOGIX5550 EXPANSION MEMORY
1756-M3 LOGIX5550 2MBYTE EXPANSION MEMORY
1756-M3K CONFORMALLY COATED LOGIX5550 EXPANSION MEMORY
1756-MVI CLX MULTI VEND INTF
1756-MVID MULTI-VENDR INTF DEV KIT
1756-N2 EMPTY SLOT FILLER CARD
1756-OA16 74-265 VAC OUTPUT 16PTS
1756-OA16I 74-265 VAC ISOLATED OUTPUT 16PTS
1756-OA8 74-265 VAC 2 AMP OUTPUT 8PTS
1756-OA8D 74-132 VAC DIAGNOSTIC OUTPUT 8PTS
