a16b-2202-0420
梯形图是PLC控制系统中使用得**多的图形编程语言,被称为PLC的**编程语言。梯形图与电器控制系统的电路图很相似,具有直观易懂的优点,很容易被工厂电气人员掌握,特别适用于开关量逻辑控制。梯形图常被称为电路或程序,梯形图的设计称为编程。PLC梯形图设计规则(或规范)如下:
(1)触点应画在水平线上,不能画在垂直分支上。应根据自左至右、自上而下的原则和对输出线圈的几种可能控制路径来画。
(2)不包含触点的分支应放在垂直方向,不可放在水平位置,以便于识别触点的组合和对输出线圈的控制路径。
(3)在有几个串联回路相并联时,应将触头多的那个串联回路放在梯形图的**上面。在有几个并联回路相串联时,应将触点**多的并联回路放在梯形图的**左面。这种安排,所编制的程序简洁明了,语句较少。
(4)不能将触点画在线圈的右边,只能在触点的右边接线圈。
FOXBORO B0133LV USPP B0133LV
FOXBORO B0133ML USPP B0133ML
FOXBORO B0133MN USPP B0133MN
FOXBORO B0133NR-U USPP B0133NRU
FOXBORO B0133SA-D USPP B0133SAD
FOXBORO B0133TAB USPP B0133TAB
FOXBORO B0133TBB USPP B0133TBB
FOXBORO B0133TCC USPP B0133TCC
FOXBORO B0133TD-F USPP B0133TDF
FOXBORO B0133TDH USPP B0133TDH
FOXBORO B0133TK USPP B0133TK
FOXBORO B0134SV NSPP B0134SV
FOXBORO B0134SV USPP B0134SV
FOXBORO B0134SV-K THERMOCOUPLE AMPLIFIER MODULE 2B9443 T20 HPT T18 R10179
FOXBORO B0134ZR USPP B0134ZR
FOXBORO B0134ZT USPP B0134ZT
FOXBORO B0134ZX USPP B0134ZX
FOXBORO B0135CR USPP B0135CR
FOXBORO B0136CG USPP B0136CG
FOXBORO B0136HE-M USPP B0136HEM
FOXBORO B0136HE-P USPP B0136HEP
FOXBORO B0136KW-D USPP B0136KWD
FOXBORO B0137NQ NSPP B0137NQ
FOXBORO B0137NR USPP B0137NR
FOXBORO B0138EA (SR)
FOXBORO B0138EA NSPP B0138EA
FOXBORO B0138HS CELL SENSOR MODULE PRESSURE SWITCH DIAPHRAGM 316L 43952
FOXBORO B0138YM ANALOG INDICATOR
FOXBORO B0139CZ USPP B0139CZ
FOXBORO B0139EY USPP B0139EY
FOXBORO B0140PK 827 DP CELL SENSOR PRESSURE SWITCH DIAPHRAGM SS316L 44025
FOXBORO B0140XW USPP B0140XW
FOXBORO B0142CB USPP B0142CB
FOXBORO B0142CC USPP B0142CC
FOXBORO B0142CE USPP B0142CE
FOXBORO B0142CEHB USPP B0142CEHB
FOXBORO B0142CH-AA USPP B0142CHAA
FOXBORO B0142CM USPP B0142CM
FOXBORO B0142DQ USPP B0142DQ
FOXBORO B0142DQ-B USPP B0142DQB
FOXBORO B0142DR NSPP B0142DR
FOXBORO B0142DR USPP B0142DR
FOXBORO B0149AG USPP B0149AG
Foxboro B0154RC Control Circuit Board Board
FOXBORO B0154RC-GE USPP B0154RCGE
FOXBORO B0154RF-B USPP B0154RFB
FOXBORO B0154RR-C USPP B0154RRC
FOXBORO B0154RR-E USPP B0154RRE
Foxboro B0154RU J Control Circuit Board 12" x 14"
FOXBORO B0154RU USPP B0154RU
Foxboro B0154RV Control Board
FOXBORO B0154RW-E USPP B0154RWE
FOXBORO B0157YV NSFP B0157YV
FOXBORO B0157YV USPP B0157YV
FOXBORO B0157ZC USPP B0157ZC
FOXBORO B0158LY Non-Flow pH Electrode Assy 85A 85C 85D
FOXBORO B0158LY NSPP B0158LY
FOXBORO B0158LY USPP B0158LY
FOXBORO B0158MC NSPP B0158MC
Foxboro B0158MC PLC
FOXBORO B0158PT-B USPP B0158PTB
FOXBORO B0183AC USPP B0183AC
FOXBORO B0183AH USPP B0183AH
FOXBORO B0184YV USPP B0184YV
FOXBORO B0194RF, SMPA-07257 MODULE KIT, 4-20MA,
FOXBORO B0195KC-F NSFP B0195KCF
FOXBORO B0195KC-F USPP B0195KCF
FOXBORO B0300BT USPP B0300BT
FOXBORO B0I57YV LEVER ASSEMBLY KIT NIB
Foxboro B101SW
FOXBORO B102ZT NSFP B102ZT
Foxboro B110ZM Fixed Pressure Regulator
Foxboro B110ZM Fixed Pressure Regulator BRAND IN ORIGINAL
FOXBORO B110ZM PRESSURE REGULATOR
FOXBORO B1271MU MOUNTING KIT STEEL 2 BRACKET 9.5MM HOLE 48463
FOXBORO B1278HE USPP B1278HE
Foxboro B2A8246
FOXBORO B4016XZ Change Kit C
Foxboro B6302FF
Foxboro B6302K2
Foxboro Back Plate Assembly CO124CF
Foxboro Ball Valve Assembly BS805JQ
FOXBORO BAR & base ASSEMBLY N0999SX
FOXBORO BASM02 USPP BASM02
Foxboro Bellow Transmitter 8700 Fox Boro Model 45 Part #U101A0 Cg968
Foxboro Bellows 7350 Fox Boro Cg967
Foxboro Bellows Assy 9200 Cg965
Foxboro Bellows Assy Q00017750 Cg964 fox boro
Foxboro Bellows C-123 BA
Foxboro Bellows C123-BA
Foxboro Bellows Unit C0124FF 1/4 coarse THD
Foxboro Bitsum Chips 500 S1635-1
FOXBORO BO123HE PRESSURE REGULATOR 250PSI 0.5-60PSI WITH GAUGE 30PSI 74460
FOXBORO BO123HE PRESSURE REGULATOR WITH GAUGE 0.5-60PSI 250PSI 1/4IN B201570
Foxboro BO123HF Pressure Regulator
FOXBORO BO138RA B0138RA PRESSURE TRANSMITTER ANALOG OUTPUT MODULE ASSEMBLY 46547
FOXBORO BO139EY B0139EY PRESSURE TRANSMITTER ANALOG OUTPUT MODULE ASSEMBLY 46545
FOXBORO BO300AG-FOX USPP BO300AGFOX
FOXBORO BOARD 3A2-V3D ST A
FOXBORO BOARD B0132UE-G B0132UE
FOXBORO BOARD B0132UG-D
Foxboro Board Card 2AX+AVS 2AX AVS 2AXAVS St A NIB
FOXBORO BOARD D0140BA-B
FOXBORO BOARD D0140BC-C
FOXBORO BOARD D0140BD-B
FOXBORO BOARD D0140BH-C REPAIRED BY PSI
FOXBORO BOARD D0140JA
FOXBORO BOARD D0140JB
FOXBORO BOARD D0140JF-R D0140JFR
FOXBORO BOARD D0140KE-C
FOXBORO BOARD D0140KF-C
FOXBORO BOARD D0141DG-H
FOXBORO BOARD F0109AB-G
FOXBORO BOARD FWS-KB2 ST.A REPAIRED BY PCS
FOXBORO BOARD PWA L0119QS L0119
Foxboro Bodine KCI-23RB, 115V Electric Motor, G-100 KW. NOS
FOXBORO BOMB HD AP20 P/N: P0901VK (TR-1)
Foxboro Booster Relay LEXG-F
Foxboro Booster Relay LEXG-G
FOXBORO BOOSTER TYPE 20 250 PSI B102RN
FOXBORO BOOSTER TYPE 20 250 PSI B102RN (W-3-18(B))
FOXBORO BRASS 2 WAY AIR SWITCH LOAD OFF LIFT DUAL 4 PORT 1/4NPT 79520
FOXBORO BRASS 2 WAY AIR SWITCH LOAD OFF LIFT DUAL 4 PORT 1/4NPT 79521
FOXBORO BS805JU FLOW CHAMBER
FOXBORO BS806AN NSFP BS806AN
FOXBORO BUOYANCY LEVEL TRANSMITTER WITH DISPLACER
Foxboro BUX Cable Connector AD-A6 (Lot of 7)
FOXBORO C0128CB NSPP C0128CB
FOXBORO C0130LU NIB
FOXBORO C0130YB NSFP C0130YB
FOXBORO C0130YB NSPP C0130YB
FOXBORO C0130ZR NSFP C0130ZR
FOXBORO C0131BB NSPP C0131BB
FOXBORO C0131LF NSFP C0131LF
FOXBORO C0131LG NSFP C0131LG
FOXBORO C0131MA NSFP C0131MA
FOXBORO C0131MA USPP C0131MA
FOXBORO C0132AA USPP C0132AA
FOXBORO C0133RE NSPP C0133RE
Foxboro C0136HZ Air Control Relay M40G NOS
FOXBORO C0136HZ NSFP C0136HZ
FOXBORO C0136HZ USPP C0136HZ
FOXBORO C0136NCDA USPP C0136NCDA
FOXBORO C0136NL USPP C0136NL
Foxboro C0-136NX-DB C0136NXDB Circuit Board SAR
Foxboro C0-136NX-EB C0136NXEB Circuit Board for 1ink Control Station SAR
Foxboro C0-136NX-EB C0136NXEB Circuit Board SAR
FOXBORO C0136TP USPP C0136TP
FOXBORO C0136TX USPP C0136TX
FOXBORO C0136YE-FRB USPP C0136YEFRB
FOXBORO C0136YK-A USPP C0136YKA
FOXBORO C0136YUAA USPP C0136YUAA
FOXBORO C0138ZB NSPP C0138ZB
FOXBORO C013HZ KIT,RELAY AND GASKET IN A
FOXBORO C0140GJ NSPP C0140GJ
FOXBORO C0140PE NSPP C0140PE
FOXBORO C0140ZJ NSFP C0140ZJ
FOXBORO C0141RA USPP C0141RA
FOXBORO C0141RA/CO141RA 50285 SERVO MOTOR NNB
FOXBORO C0143AH USPP C0143AH
FOXBORO C0143DL NSPP C0143DL
FOXBORO C0146UT NSPP C0146UT
FOXBORO C01548E USPP C01548E
FOXBORO C0156GT-A CIRCUIT BOARD A CARD PLC MODULE F8613A P012MJH 47816
FOXBORO C0162BX USPP C0162BX
Foxboro C1002
FOXBORO C1002 USPP C1002
FOXBORO C100CX INTERGRATOR RELAY TRANSMITER NIB
FOXBORO C100EE NSPP C100EE
FOXBORO C100EM NSPP C100EM
FOXBORO C119KY NSPP C119KY
FOXBORO C124EN BELLOWS ASSEMBLY PRESSURE ELEMENT FOR PRESSURE ConTROLLER 46645
FOXBORO C124MW MANIFOLD ASSEMBLY (B94)
FOXBORO C135YN NSFP C135YN
Foxboro Cable Block Termination Fieldbus P0972DX CP60
Foxboro Cable Connector BUX 533 140 011 (3)
Foxboro Cable for 51B Series Terminals P0971PD RS232
FOXBORO CABLE G0113DZ F0109AL-A
Foxboro Cable P0800DA
Foxboro Cable Peripheral SCSI P0500UX
FOXBORO CABLE SERIAL GCIO 2 FEET P0922AW REV E
Foxboro Calibration Apparatus Model MSI14206 43.50
FOXBORO CALIBRATION APPARATUS MSI-14206 49.99
Foxboro Capillary System W/ Helical Bourden 5000 PSI Type AA5 Cg901
Foxboro Capsule ASY W/Bourdon ASY Model HGH Fox 12950, 12930, 93500 Cg914
Foxboro C-ESA21AN 40 RZ-RFE3F Transmitter Recorder 120vac 4-20mA Humidity Temp
FOXBORO CF200BX USPP CF200BX
Foxboro CFS10 Sanitary Mass Flowmeter
FOXBORO CFS10-03SCFNN 275PSI 150 1/2IN STAINLESS MASS FLOWTUBE CFT10/50 D203223
FOXBORO CFS10-03SCFNN I/A SERIES 275PSI STAINLESS 150 1/2 IN FLOWTUBE D204892
Foxboro CFS10-05SCCGZ-E Mass Flow Tube CFS1005SCCGZE Meter Flowtube I/A Series
Foxboro CFS10-05SCFBB I/A Series Mass Flow Tube -
FOXBORO CFS10-10CPFBB FLOW METER
FOXBORO CFS10-15SCFBB MAS FLOW TUBE
Foxboro CFT10 I/A Series Mass Flow Transmitter
FOXBORO CFT10 MASS FLOW TRANSMITTER
Foxboro CFT10-PAENCGZ
FOXBORO CFT10-PAENFNS USPP CFT10PAENFNS
FOXBORO CFT10-SAENFNN I/A MASS FLOW TRANSMITTER ,
FOXBORO CFT30-1411B2/CFS30-A1AR0B1 NSFP CFT301411B2CFS30
Foxboro CFT50 I/A Series Digital Mass Flow Transmitter E19 (1024)
Foxboro CFT50-B1EACBK-B I/A Series Digital Mass Flow Transmitter E8 (1024)
Foxboro CFT50-B1EACBK-B I/A Series Dilital Coriolis Mass Flow Transmitter
Foxboro CFT50-B1EACBN-B I/A Series Digital Mass Flow Transmitter F20 (1024)
Foxboro CFT50-B1EADBZ Mass Flowmeter CFT50B1EADZ
FOXBORO CHANGE KIT B4016XZ
Foxboro Chart Drive 110VAC 24 Hour 60 Cycle 4RPH M132NC Synchron Detent Clutch