ArmorStratix 5700 24 port managed switch
1783-ZMS24TA
1783-ZMS24TA
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（3） PLC控制系统编程技巧。PLC程序设计的原则是逻辑关系简单明了，易于编程输入，少占内存，减少扫描时间，这是PLC 编程必须遵循的原则。下面介绍几点技巧。
PLC各种触点可以多次重复使用，无需用复杂的程序来减少触点使用次数。
同一个继电器线圈在同一个程序中使用两次称为双线圈输出，双线圈输出容易引起误动作，在程序中尽量要避免线圈重复使用。如果必须是双线圈输出，可以采用置位和复位操作（以S7-300为例如SQ4.0或者 RQ4.0）。
如果要使PLC多个输出为固定值 1 （常闭），可以采用字传送指令完成，例如 Q2.0、Q2.3、Q2.5、Q2.7同时都为1，可以使用一条指令将十六进制的数据0A9H直接传送QW2即可。
ALLEN BRADLEY 100-C60A10
Allen Bradley SLC 100 Expansion Unit 1745-E105, #8868
ALLEN BRADLEY 100-C43UDJ10 NSFP 100C43UDJ10
LOT OF 6 ALLEN BRADLEY CONTACTORS CATALOG# 100-C37
Allen Bradley Contactor 702L-DOA93, 100 Amp #29275
ALLEN BRADLEY 1745-E105 SLC100 RELAY OUTPUT PLC1074
Allen Bradley Micro Logix 1000 PLC 100/120VAC 1761L32AW
Allen-Bradley 100-B250ND3 100B250BND3 120v 250a
ALLEN BRADLEY 100-D95ED11 USPP 100D95ED11
700ZBR100AZ1 NEW ALLEN BRADLEY 700 ZBR100AZ1
100B110NB3 NEW ALLEN BRADLEY 100 B110NB3
Allen-Bradley 1769-OA8 Compact 100 to 240v ac Solid S
ALLEN BRADLEY 1494V-DS100 NSPP 1494VDS100
Allen-Bradley MOTOR STARTER CONTACTOR 600V 100-B300N*3
ALLEN BRADLEY 100-C23ZJ300 SER.C NEW IN FACTORY BOX
1 NEW ALLEN-BRADLEY CONTACT BLOCK 100C30ZJ10
ALLEN BRADLEY 1326CFU100 SERVO CABLE 1326-CFU-100 NEW
ALLEN BRADLEY 100-B110NI3 USPP 100B110NI3
ALLEN BRADLEY CONTACTOR 300 HP 100-B300N*3
ALLEN BRADLEY 700-ZBR100AZ1 NSFP 700ZBR100AZ1
ALLEN BRADLEY 100-A75NX3 USPP 100A75NX3
NEW ALLEN BRADLEY 100FT CABLE RESOLVER 1326-CFU-100
ALLEN BRADLEY 809S 809S-AB100A1 AC CURRENT RELAY
100DNY41R NEW ALLEN BRADLEY 100 DNY41R FREE SHIPPING
ALLEN BRADLEY 100-C60DJ10 NSFP 100C60DJ10
ALLEN BRADLEY 1494F-N100-1 USPP 1494FN1001
Allen Bradley 100-B180N*3 Motor Starter Contactor
100C43DJ10 NEW ALLEN BRADLEY 100 C43DJ10 FREE SHIPPING
ALLEN BRADLEY #1494V-DS100 100A DISCONNECT SW. PR4/FB
ALLEN BRADLEY 100-C43ZJ10 NSFP 100C43ZJ10
ALLEN BRADLEY, 100D-140, CONTACTOR,1000 VOLT,250AMP
ALLEN BRADLEY 100-C85KA10 NSFP 100C85KA10
Allen-Bradley Contactor 100-D420 working 100-DHF 420
ALLEN BRADLEY 100-C40ZJ400 NSFP 100C40ZJ400
ALLEN BRADLEY 194R-NJ100P3 USPP 194RNJ100P3
ALLEN BRADLEY SLC 100 PROGRAMMABLE CONTROLLER C# 1745..
Allen Bradley 100-C43Z 10 with AB 193-EA1JD + TWO 100-S
ALLEN BRADLEY 1745-E105 SLC 100 EXPANSION UNIT SERIES A
Allen Bradley SLC 100 Programmable Controller
ALLEN BRADLEY 100A FUSED DISCONNECT SWITCH 1494V-DS100!
ALLEN BRADLEY MOTOR STARTER 100-B250N COIL 120 V 200 HP
Allen Bradley 1326-CFU-100 Cable Assembly - NEW
Allen Bradley AC Lighting Contactor 100 Amp 600 VAC
NEW ALLEN BRADLEY 100FT CABLE RESOLVER 1326-CFU-100 NEW
ALLEN BRADLEY CONTACTOR 100B180ND3
ALLEN BRADLEY 9101-1699-100 *NEW*
ALLEN BRADLEY # 100-C60DJ10 SER.B NEW NO BOX
ALLEN BRADLEY CABLE ASSEMBLY 9101-1699-100
ALLEN BRADLEY 100-B110N*3 ELECTRIC MOTOR CONTACTOR 120V
Allen Bradley 100-B110N*3 Contactor 110 Amp
Allen-Bradley 100A Fusable Disconnect Switch 1494V-DS10
NEW ALLEN BRADLEY 100-A60N*3 CONTACTOR
Allen Bradley Cat: 100-B250N*3 Contactor
Allen Bradley Contactor Cat No.: 100-B250N*3
Allen Bradley Contactor 100-B110N*3 Series B #21161
Allen Bradley Contactor 100-B110N*3 Series A #21163
ALLEN-BRADLEY 509-EOD SIZE 4 120V 100 HP MAX MAKE OFFER
Allen Bradley 700-RTA99V100A1 Solid State Timing Relay
Allen Bradley 100-A12ND3 Reversing Contactor + Relay +
Allen Bradley Welding Isolation Contactor 270amp 100W-B
Allen Bradley 100HP Size 4 Motor Starter 709-EOD Ser:K
ALLEN BRADLEY 1745-E101 SERIES B SLC100 EXPANSION -NEW
ALLEN BRADLEY SLC 100 PROCESSOR UNIT 1745-LP101 SER D
Allen-Bradley 100S-C30DJ14C 30A 600V Contactor
Allen Bradley 43 Amp Contactor 100-C43ZJ00 NIB (3021)
Allen-Bradley 1745-LP101 SLC 100 Processor Unit (PLC)
Allen-Bradley 100 Amp contactor
ALLEN-BRADLEY SLC 100 1745LP103 PROGRAMMABLE CONTROLLER
500FL-DOD93 ALLEN BRADLEY 100AMP CONTINUOUS CONTACTOR
