50R4160

50R4160

50R4160

以上是一个较为简单的串口读写程序。由于在整个PC link网络中连接了多个站点的松下PLC，而PLC一次最多只能被读取连续的27个数据寄存器的数值，所以，要完成整个生产系统的数据读取，必须要分开执行多次读和写的动作。在这种情况下，就需要考虑读写的时序问题。要完成连续的周期性的多点读写操作，在LabVIEW中可以使用顺序结构。顺序结构的功能是强制程序按一定的顺序执行。顺序结构可分为层叠式与平铺式。不过这两种结构执行相同的读写操作，时间和顺序都相同，都可以实现对于串口的连续多点读写。

由于读写数据时每个数据长度不一定都一样，数据较多的，要等待较长的时间，这样才能保证在等待时间内将所有数据读取完毕；数据较少的，就不需等待同样的时间。然而等待的时间一般较难确定，时间设得太长，占用串口的时间就会较长，会降低通讯效率，造成数据延时；时间太短，数据没有完全返回时就执行下一步程序，可能会造成数据的丢失。

备货，备货，降降降，火火火，火火火……

——————————————————————————————————————

公司名称：厦门泰尼电气有限公司

联系人：小黄（销售代表）

联系电话：0592-6809319

传真号码：0592-6890859（麻烦备注01006收）

手机：18950191386

QQ号码:2917675397

邮箱：2917675397@qq.com

诚信经营，质量为首，诚信至上，泰尼电气小黄竭诚为您服务！！！

——————————————————————————————————

WESTINGHOUSE CUTLER HAMMER TYPE W SIZE 1 STARTER 3 AMP BREAKER MCC BUCKET DOOR


WESTINGHOUSE 11-300 12 SPACE BREAKER PANEL PANELBOARD MCC MCCB BUCKET


EMERGENCY POWER ENGINEERING 5-00271-00D 8432-416


 GILBARCO MARCONI W03410-G2 W0-3410-G2 ADVANTAGE CABLE


 FAIRCHILD TDFI7800-401 TRANSDUCER 4-20mA INPUT 3-15 PSIG OUTPUT


ITE SIEMENS JU324 200 AMP 240V NON-F SAFETY SWITCH DISCONNECT


 GE 12HFA151A2F HFA RELAY


Siemens QJH 2 pole 175 amp 240v QJH22B175 Circuit Breaker


 GILBARCO MARCONI T16925-P1R T-16925-P1R KEYBOARD BOARD


 CUTLER HAMMER 9-941-17 COIL 440V 50HZ


 GILBARCO MARCONI T20138-G1R T-20138-G1R POWER SUPPLY CIRCUIT BOARD


 GENERAL ELECTRIC GE CR463L40AJA10A0 30 AMP 4 POLE LIGHTING CONTACTOR 120V


ALLEN BRADLEY FUSIBLE 60 AMP FUSIBLE F FEEDER MCC MCCB BUCKET


Square D JD 250 3 pole 225 amp 600v JDA36225 PowerPact Circuit Breaker JDA


SMARTWIRE 14/2 TEMP. CONTROL SYSTEM AN BIN DIG IN/OUT E143242 14 AWG 792FT WIRE


5d73402G01 POWER SUPPLY DC-DC CONVERTER GQ1003-7R GQ2541-7R


BROWNING C950X 2 7/16 TAPERED ROLLER BEARING INSERT 2-7/16" SHAFT


CUTLER HAMMER UNITROL F10 SIZE 1 MOTOR STARTER FUSIBLE MCC MCCB BUCKET


CUTLER HAMMER UNITROL F10 SIZE 1 2 MOTOR STARTER FUSIBLE FEEDER MCCB MCC BUCKET


ITE Siemens CLE63B030 CLE 30 amp 3 pole circuit breaker


 DANFOSS V02 VO2 AH108020 VARIABLE OUTPUT BOARD


Square D KAP 3 pole 175 amp 600v KAP36175 Circuit Breaker


DYNAPAR MDJR1U00 1/8 DIN MOTOR CONTROL C383189 003


 BARKSDALE D2X-A150SS-UL EXPLOSION PROOF PRESSURE SWITCH


ALPHA WIRE H1 P/N 5616B1601 1PR/16 AWG SHIELDED SUN RES. DIR BUR 16/2 WIRE 340FT


 JOSLYN CLARK 7001-8040-11 CONTACTOR 40 AMPS 500VDC 120V COIL 3 POLE


 EATON WMB01 SERIES C WALL MOUNT BRACKET FOR TRANSFORMERS


Square D LA 3 pole 350 amp 600v LA36350 Circuit Breaker BLACK


 Siemens EB3225S&F 225 amp 120/240 240v QJ23B200 Circuit Breaker Enclosure


ALLEN BRADLEY 2100 250 225 200 150 AMP FEEDER BREAKER MOTOR STARTER BUCKET #9


ITE siemens ced63b060 CED 60 amp 3 pole circuit breaker CED6 short


 FYH UCF315 48G5 MOUNTED BEARING


 SIEMENS CQD CQD380 3 POLE 80 AMP CIRCUIT BREAKER


cutler hammer FDB fdb3110 110 AMP BREAKER


RELIANCE ELECTRIC 8C10 IMPAK PLUS VS DRIVE


PENNWALT SERIES 65-120 PORTABLE PNEUMATIC CALIBRATOR


GE SELA SELA36AT0100 100 AMP FRAME 3 POLE 600V CIRCUIT BREAKER SHUNT


SQUARE D FHL FHL360000M8022 3 Pole 100 amp 600v Circuit Breaker FHL36000-M8022


CINCINNATI MILACRON 3-531-3282A CIRCUIT BOARD 35313282A MISSING LED LIGHT


WESTINGHOUSE TYPE CBP 150 AMP 600V BREAKER BUSS BUS PLUG


ALLEN BRADLEY 2100 FUSIBLE F 150 AMP FEEDER MCC MCCB BUCKET


 IN BOX SQUARE D HDL HDL36100 3 POLE 100 AMP CIRCUIT BREAKER


 GE SEHA36AT0100 3 Pole 100 Amp seha BREAKER blue tape shunt auxiliary#


ALLEN BRADLEY 150 AMP 2100 DUAL FEEDER BREAKER BUCKET


 WESTINGHOUSE 116D977A19 BA-400 POWER FUSE REFILL 7200V 400E AMPS


DANFOSS V02 VARIABLE OUTPUT BOARD AH098009 AA088210


 Cutler Hammer FDB 14k 3 pole 60 amp 480v FDB3060 Circuit Breaker


 ATP AT66-PNL-48 48 PORT CAT6 PATCH PANEL 568A/568B WIRING 110 TERMINATION


SQUARE D 8020 SCP111 SY/MAX MODEL 100 CONTROLLER WITH MEMORY MODULE


WESTINGHOUSE LA LA3400FN 3 POLE Non-Auto Circuit Interrupter


 ALLEN BRADLEY 802PR-LABM2-12 SER.C PROXIMITY SWITCH WITH 12' ft CORD


AVDEL 727 AIR RIVETER WITH FOOT PEDAL


 SQUARE D PQ PQ4203 30 AMP 240V FUSIBLE BUSS BUS PLUG


SQUARE D QMB QMB364 200 AMP 600V FUSIBLE PANELBOARD SWITCH D2


ITE siemens hf63f250 circuit breaker 3 pole 225 amp trip hf


SIEMENS LXD 3 pole 600 amp 600v LXD63s600 Circuit Breaker LXD


LAPPKABEL UNITRONIC 300 P/N 302406 B 24 AWG/6C OIL RESISTANT WIRE 24/6 137FT


Westinghouse FD 25k 3 pole 150 amp 600v FD3150 Circuit Breaker BLUE


WESTINGHOUSE F FRAME DE-ION F3100M 3 POLE 100 AMP MAGNETIC TRIP CIRCUIT BREAKER


SALISBURY S.I.P. HIGH VOLTAGE 1000V 3/8 DRIVE TORQUE WRENCH 30-150 IN-LB


 Merlin Gerin Square D MG24562 4 pole 63 AMP C60N CIRCUIT BREAKER


GILBARCO MARCONI VERIFONE Q13086-101 G-SITE CIRCUIT BOARD CORE


GILBARCO MARCONI VERIFONE T20229-G1 T20229-GX ADVANTAGE CARD CAGE ASSEMBLEY


SQUARE D MODEL 6 SIZE 1 MOTOR STARTER 30 AMP FUSIBLE FEEDER MCC MCCB BUCKET


 Westinghouse EHB 3 pole 80 amp 480v EHB3080VL Shunt Circuit Breaker


 GE CR360MA402AA02AAD 480V 60 AMP 2 POLE LIGHTING CONTACTOR 115-120V COIL


SQUARE D QBP QBP32125TM 2 POLE 125 AMP 240V CIRCUIT BREAKER CHIPPED


SIMPLEX 4100-2300 EXPANSION BAY 566-084 POWER DISTRIBUTION BOARD W/FRONT COVERS


 GreCon MK-UPU2000 566829 ID 585343


 ITE SIEMENS BOS BOS14351 30 AMP 600V FUSIBLE F BUSS BUS PLUG


ITE siemens hf63f250 circuit breaker 3 pole 150 amp trip hf


square d kal36110 kal 110 amp 3 pole circuit breaker black face


RAMSEY CONTROLS BN176 REV. INV. TRIGGER


APPLETON EFKB-12/EFKB-J1U2 EXPLOSION PROOF ON/OFF,START/STOP SWITCH W/ LIGHT


W.E. ANDERSON TR-7 SAFE-T-GROUND GROUND INDICATOR 105-125V EXPLOSION PROOF


NEUGART PLE 80/90 SERVO GEAR BOX RATIO 8:1


 GILBARCO MARCONI PETRO VEND MBR 213 DUAL TRACK CARD READER


 GILBARCO MARCONI BLACK BOX COS 2 SWED55545 OPERATED SWITCH


 GILBARCO MARCONI K93062-02 UPGRADE KIT TCR-G TCR-G2


 PYRONICS PS-OW PRESSURE SWITCH 1 PSI MAX 120/220V 5/2.5 AMP 50/60 HZ


 GILBARCO MARCONI 22196-01 13880-01 SERVICE CONSOLE KEY PAD


 SQUARE D 750SV51F .750 KVA PHASE 1 TRANSFORMER 3R ENCLOSURE 600V- 120/240V


Westinghouse 3 POLE 100 AMP CA3100 240V CA Circuit Breaker


SQUARE D LAP LAP36400MB 3 POLE 400 AMP Circuit BREAKER Damaged Label


INDRAMAT AS31/006-000 POWER SUPPLY AC SERVO CONTROLLER MODULE SOFTWARE #6


INDRAMAT NFD02.1-480-130 POWER SUPPLY AC SERVO CONTROLLER FILTER DRIVE #4


INDRAMAT KDA-02V3.05 POWER SUPPLY KDA CONTROLLER MODULE SOFTWARE #3A


INDRAMAT MSP1V0.7 KDA3.2-050 POWER SUPPLY SERVO CONTROLLER MODULE SOFTWARE #7


 TURN-ACT TURN-DEX 422-2-000 ACTUATOR WITH UNIDIRECTIONAL CLUTCH 2-1/2" BORE


ITE SIEMENS MODEL MARQ 21 95 200 AMP BREAKER FEEDER MCC MCCB BUCKET


WESTINGHOUSE MCP 3 pole 250 amp 600v MCP531500w Motor Circuit Protector


CROUSE HINDS EJB080606 EXPLOSION PROOF ENCLOSURE 6" x 6" x 8" INSIDE DIMENSIONS


WATTS F602-16WJ FILTER 1" NPT MAX PRESSURE 250PSI MAX TEMP 150F