1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10 1771-P10
一、减少输入点数的方法
1 . 分时分组输入
自动程序和手动程序不会同时执行，自动和手动这两种工作方式分别使用的输入量可以分成两组输入，共用同一个端子，如下图 所示 。
图 分时分组输入
2. 输入触点的合并
如果某些外部 输入信号总是以某种“与或非”组合的整体形式出现在梯形图中，可以将它们对应的触点在 PLC外部串、并联后作为一个整体接到 PLC 的输入端子上，只占 PLC 的一个输入点。
例如某负载可以在 3 处起动 / 停止，可以将 3 个起动信号并联，将 3 个停止信号串联，分别送给 PLC 的两个输入点，如下图所示。
图 输入触点的合并
3. 将信号设置在PLC之外
系统的某些输入信号，例如手动操作按钮、保护动作后要手动复位的电动机热继电器 FR 的常闭触点提供的信号，可以设置 在 PLC 外部的硬件电路中，如下图所示。
图 将信号设在PLC之外
二、减少输出点数的方法
1. 减少所需数字量输出点数的方法
在 PLC 的输出功率允许下，通 / 断状态完全相同的多个负载并联后，可以共用一个输出点，通过外部的或 PLC 控制的转换开关的切换，一个输出点可以控制两个或多个不同时工作的负载。
在需要用指示灯显示 PLC 驱动的负载的状态时，可以将指示灯与负载并联，并联时指示灯与负载的额定电压相同，总电流不应超过允许的值。
可以用接触器的辅助触点来实现 PLC 外部的硬件联锁。
系统中某些相对独立或比较简单的部分，可以不进 PLC ，用继电器电路来控制，这样可以减少所需的 PLC 的输入、输出点数。
2. 减少数字显示所需输出点数的方法
如果用数字量输出点来控 制多位 LED 七段显示器，所需的输出点是很多的。
在下图所示电路中，用具有锁存译码驱动功能的芯片 CD4513 驱动共阴极 LED 七段显示器。
主营产品：Schneider ,Foxboro,Ovatin,Allen-Bradley,Siemens等各类工控产品，
欢迎来电咨询！
公司名称：厦门兴润星贸易有限公司
联系人：阳先生
手机：18030263579
电话：0592-6895320
传真：0592-6034581
QQ:1529928696
E-mail:1529928696@qq.com
全球疯狂最低价
NEW BAILEY'S B/A TOW TRUCK OVER THE RAIL SIDE RECOVERY GUIDE 6-SRG2
Champ Bailey Signed Denver Broncos ProLine w/PIC-COA
BAILEY BROWN CHENILLE MICROFIBER GLIDER CHAIR OTTOMAN
HTF FINE SET 10 ANTIQUE JEWELED DINNER PLATES EXCEL! JOHNSON BROS& BAILEY BANKS
BAILEY CONTROLS NASM-02 USPP NASM02
BAILEY CONTROLS IMCIS-22 USPP IMCIS22
BAILEY CONTROLS IMCIS-02 USPP IMCIS02
BAILEY CONTROLS NCIS-02 USPP NCIS02
Bailey Serial Port Module NSPM01
Bailey Serial Port Module NSPM01
BAILEY CONTROLS NASI-02 USPP NASI02
BAILEY CONTROLS NDSO-01 USPP NDSO01
BAILEY CONTROLS 6632945G1 NSFP 6632945G1
ABB BAILEY CONTROLS NIOX01 EXPANDER I/O MODULE NET 90 6634165E1 CARD BOARD 51942
Bailey/Fischer Porter Magnetic Flowmeter Signal Converter 50XM14NXKD10AABC227
Womens UGG Over the Knee Bailey Button Bomber Suede Chestnut Size 11 Tall Boots
4 TIX Ringling Bros. And Barnum & Bailey Circus 10/13 Td Banknorth Garden LOGE
BAILEY CONTROLS 740110AAAA1 USPP 740110AAAA1
BAILEY CONTROLS NTAI-01 USPP NTAI01
UGG AUSTRALIA - 3172 OVER THE KNEE BAILEY BUTTON BLACK WOMENS US SIZE 10
UGG AUSTRALIA - 3172 OVER THE KNEE BAILEY BUTTON BLACK WOMENS US SIZE 6
UGG AUSTRALIA - 3172 OVER THE KNEE BAILEY BUTTON BLACK WOMENS US SIZE 7
UGG AUSTRALIA - 3172 OVER THE KNEE BAILEY BUTTON CHESTNUT WOMENS US SIZE 6
UGG AUSTRALIA - 3172 OVER THE KNEE BAILEY BUTTON CHESTNUT WOMENS US SIZE 9
UGG AUSTRALIA - 3172 OVER THE KNEE BAILEY BUTTON CHESTNUT WOMENS US SIZE 8
NWT BURBERRY BRIT MEN'S $695 BAILEY NAVY BLUE HOODED PULLOVER COAT JACKET~M
BAILEY CONTROLS TB440011126A USPP TB440011126A
BAILEY A8DME121-2-0 PRESSURE TRANSMITTER 53VDC 4-20MA 2000PSI MAX 300"WCD 49567
BAILEY / FISCHER PORTER PTSDDA1221B2100 DIFFERENTIAL PRESSURE TRANSMITTER 57234
BAILEY A8DME121-2-0 PRESSURE TRANSMITTER 53V VDC 4-20MA 2000PSI 300IN WCD 44575
BAILEY BC3821511 PRESSURE DIFFERENTIAL TRANSMITTER 2000PSI 12-42V DC 43802
Jofran Rectangle Table in Bailey Brown Finish
BAILEY CONTROLS TB46111240002 NSPP TB46111240002
WOMENS ELIE TAHARI BLACK 3 BUTTON STRIPE BAILEY JACKET BLAZER sz 12 MSRP$328.00
BAILEY FISCHER PORTER SIGNAL CONVERTER FOR MAGNETIC FLOWMETER D50XM11XDAB20AAAB2
100% Auth and BNWT Womens Over the Knee Bailey Button Ugg Sparkle Boots, size 8
Bailey Fischer Porter Magnetic Flow Meter Signal Converter, 50XM1 3NXKD10AABC229
Bailey Ejaculator Sheep Goats Semen Test Breeding NWT ON SALE!!
Bailey Temperature transmitter (**NIB**) M/N EQ10
EARLY AND RARE SELDEN BAILEY TOOL CO DEFIANCE NO 9 CIRCULAR PLANE PATENTED
1612B06G0001 BAILEY CONTROLS
1 BAILEY NTAI-01 PC BOARD TERMINATION NET 90. S1-1.
Bailey 7 Legend 20X Western Cowboy Hat 56cm NWT!
5187-8392 HP Compaq Motherboard Sb Bailey-P Ul8E Entertainment Center Sys Brd Bo
5188-1728 HP Compaq Motherboard Sb Bailey-P Ul8E Z552 System Board
Ugg Australia Womens Over the Knee Bailey Button Sparkles Black 6 7 8 9 3173 NIB
BAILEY 6637830G1 BUS MONITOR MODULE *NEW NO BOX*
BAILEY CONTROLS NTAI-02 NSPP NTAI02
BAILEY CONTROLS 1948118E1 NSFP 1948118E1
BAILEY CONTROLS 6635905A1 USPP 6635905A1
BAILEY CONTROLS 6637830G1 NSPP 6637830G1
BAILEY CONTROLS 6637597A24100 USPP 6637597A24100
BAILEY CONTROLS IMDSO-01 USPP IMDSO01
BAILEY CONTROLS E271-60MKIIA USPP E27160MKIIA
BAILEY BC24215110 DIFFERENTIAL PRESSURE TRANSMITTER 150IN H2O 3600PSI 56950
NEW WOMEN UGG BOOT OVER THE KNEE BAILEY BUTTON BOMBER CHESTNUT 100% AUTHENTIC WT
NEW WOMEN UGG BOOT OVER THE KNEE BAILEY BUTTON BOMBER BLACK BLACK 100% AUTHENTIC
Jofran 850C Counter Height Rectangle Table Bailey Brown
BAILEY CONTROLS IIVRT01 NSPP IIVRT01
BAILEY CONTROLS RQ10 USPP RQ10
BAILEY HOWELL CELTICS,HOF JSA/COA SIGNED BASKETBALL
1958 Topps PSA DNA Signed Lot of 9 Cincinnati Reds Redlegs Bailey McMIllan
BAILEY ANALOGｍａｓｔｅｒMODULE NAMM02 *NICE*
BAILEY I/O CONTROL NC1S02 *NICE*
Bailey 663656A1 Interface Assembly
Bailey PTSPGG110010100 Type GAGE 0-450PSI 12-42VDC New
Champ Bailey Signed Denver Broncos ProLine Helmet
1731 ANTIQUE THE UNIVERSAL ETYMOLOGICAL ENGLISH DICTIONARY BY N. BAILEY LEATHER
1971 Ringling Bros. and Barnum & Bailey poster Giraffe Neck Women
1925 Ringling Bros. and Barnum & Bailey Chariot Races Red Background
Bailey PTSDLD1A1B12102 Level with SST Flange 3'' 150#
PSA 3 1933 HAMILTON GUM HOCKEY CARD #11 ACE BAILEY HOF
BAILEY MILLIVOLT CONVERTER 740110AAAA2 *USED*
ABB BAILEY 660-SLC-3313 CONTROL CARD SLC21
BAILEY CONTROLS NDS002 DIGITAL OUTPUT 6636038A2
Original Vintage Poster Rumpole of the Bailey Mystery PBS Judge Law Comedy TV
TBI BAILEY TB701001 ANALYTICALCONTROLLING TRANSMITTER
1933-34 V252 Canadian Gum #3 Ace Bailey RC (Good)
BAILEY TBI TRANSMITTER TB515 *NICE*
Bailey NBTM01 Network 90 Bus Transfer Module
Tuttle & Bailey Single Duct Terminal Unit 400cfm Max
Lydia Bailey by Kenneth Roberts. Signed & Numbered
Bailey Fischer Flow Meter 1.5" 158gpm
Bailey NAMM03 Network 90 AnalogｍａｓｔｅｒModule
Boyd's Bears Plush LE~BAILEY FALL 1992~THE FIRST BAILEY PRODUCED~TEIL CORDUROY~
1950's Ringling Bros & Barnum & Bailey 30"x 46" Original NEVER SEEN BEFORE
BAILEY DIFFERENTIAL PRESSURE TRANSMITTER 12...42 VDC 3625 PSI PTSDDF1NN1301H
BAILEY FISCHER PORTER CONTROLLER 53MC5412A25BAAXDXDXX
BAILEY FISCHER PORTER CONTROLLER 53MC5412A25BACXDXAXX
BAILEY FISCHER PORTER CONTROLLER 53MC5412A24BACXDXFXX
BAILEY FISCHER PORTER CONTROLLER 53MC5412A23BAAXBXDXX
BAILEY infi 90 NAMMO3 NETWORK ANALOGｍａｓｔｅｒ6637203D1 #48
BAILEY infi 90 NAMMO3 NETWORK ANALOGｍａｓｔｅｒ6637203A1 #49
ABB Bailey DOT-100 PHBDOT10010000 Harmony Digital Output Module Block Infi 90
TBI-Bailey ABB TBN58 pH Transmitter
BAILEY NLMM02 NETWORK 90 ENHANCED LOGICｍａｓｔｅｒMODULE 5VDC 3VA CARD 52137
1963 Topps #368 Ed Bailey PSA 9 MINT Cert. No. 19455475
Bailey ABB IMAMM03 Infi 90 AnalogｍａｓｔｅｒModule Used
Bailey ABB IMCPM02 Infi 90 Comm Port Module Used
BAILEY TBN580-12/6638567-1 3-TIER TRANSMITTER MODULE ***NNB***
BAILEY TBN580-12/6636084-1 3-TIER TRANSMITTER MODULE ***NNB***
BAILEY CONTROLS NTMF-01 NSFP NTMF01
Bailey Control NCIS02 PLC NCIS02
Bailey infi 90 Module AC Transfer Module 663782B1
Bailey Control NASM02 PLC
NEW BAILEY AH234434 RTD I/P CARD PLC BOARD