GE DS200TCEAG1A
当PLC运行时,是通过执行反映控制要求的用户程序来完成控制任务的,需要执行众多的操作,但CPU不可能同时去执行多个操作,它只能按分时操作(串行工作)方式,每一次执行一个操作,按顺序逐个执行。由于CPU的运算处理速度很快,所以从宏观上来看,PLC外部出现的结果似乎是同时(并行)完成的。这种串行工作过程称为PLC的扫描工作方式。
用扫描工作方式执行用户程序时,扫描是从条程序开始,在无中断或跳转控制的情况下,按程序存储顺序的先后,逐条执行用户程序,直到程序结束。然后再从头开始扫描执行,周而复始重复运行。
1 F. Q7 e' |( @/ F( E) s8 X1 q( -----------------------------------------1 F. Q7 e' |( @/ F( E) s8 X1 q( ---------------
YASKAWA VARISPEED DC SPINDLE DRIVE CDMR-MR-26K
EUROTHERM DRIVES DC DRIVE 591S/1500/9/0/0?0
TECO DC DRIVE PA7300-4025-N1 PA73004025N1
ACCUWEB BRUSH TYPE PWM SERVO AMPLIFIER MCB 3083 000701-...
PARKER SSD DRIVE 514C 514C/16/00/00/0?0
SUPERIOR ELECTRIC STEPPING MOTOR WITH DYNAPAR ENCODER K...
INGERSOLL-RAND CONTROL MODULE 99388019R07
INGERSOLL-RAND CONTROL MODULE 99388019R04
SUPERIOR ELECTRIC STEPPING MOTOR WITH DYNAPAR ENCODER K...
GRAHAM SPEED AND TORQUE CONTROL 176B8010 **NEW**
DANFOSS DC DRIVE POWER SOURCE CYCLETROL C11500C000
DANFOSS DC DRIVE POWER SOURCE CYCLETROL 150 150303
ORIENTAL MOTOR DC SPEED CONTROL DRIVE MSP302N
INGERSOL-RAND DIAPHRAGM PUMP PD10A-ASP-STT PD10AASPSTT ...
MKS TAKE-UP PUMP ***LATION VALVE 155-1160P-24VDC 155116...
MKS TAKE-UP PUMP ***LATION VALVE 155-1100P-24VDC 155110...
WILDEN DIAPHRAGM PLASTIC PUMP 01-5095-20 **NEW**
BECKER VACUUM PUMP VT 4.10
PFEIFFER VACUUM WITH PROFIBUS GATEWAY PPT 100 24V 1.2W ...
PFEIFFER VACUUM WITH PROFIBUS GATEWAY PPT 100 24V 1.2W ...
VIKING HYDRAULIC PUMP GP-0525-G0V GP0525G0V *REFURBISHE...
TOYOOKI KOGYO PUMP A-00010 **NEW**
TOYOOKI KOGYO PUMP TCP3-L25-MRI **NEW**
PIAB VACUUM PUMP M25B-EN M25BEN ** NEW **
BECKETT RECIRCULATING PUMP D40AG
PACIFIC SCIENTIFIC SERVO MOTOR S21GSAA-RNNM-02
PACIFIC SCIENTIFIC SERVO MOTOR R32GENC-R2-NS-V?S-00
PARKER DIGIPLAN SERVO MOTOR ML3450B-10
FANUC BETA M SERVO MOTOR A06B-0115-B275#?0021 A06B0115B2...
INDRAMAT PERMANENT MAGNET SERVO MOTOR MDD112C-N-030-N?2M...
YASKAWA SERVO MOTOR SGMP-04UW14P SGMP04UW14P
PARKER SERVO DRIVE C3S075V4F10 C10 T60 M00 C3S075V4F10C...
DAYTON PERMANENT MAGNET DC SERVO MOTOR 1725RPM 180VDC 4...
DENSO SERVO MOTOR MSM022C2H
GARDNER-DENVER TIGHTENING MODULE SERVO DRIVE TM12
WHEDCO SERVO MOTOR CONTROL DRIVE CMC-0101-2-B CMC01012B
WHEDCO SERVO MOTOR CONTROL DRIVE CMC-31PX-2-B CMC31PX2B
ASCO JOUCOMATIC TRINORM-2 CYLINDER 122290/8 *NEW*
HONEYWELL ACTUATOR FLUID POWER 110/120V V4055D 1043
ROBO CYLINDER INTELLIGENT ACTUATOR RCP-SA6I-L-200-?M RCP...
IAI LINEAR ACTUATOR RCP2-SA5-I-PM-6?-350-P1-M
NEXEN BRAKE SPRING ACTUATOR 837600 ** NEW **
PARKER PNEUMATIC ACTUATOR 50CFRCDUC
HOKE SPACE SAVER GEARED ACTUATOR 0750A4
REMOTE CONTROLS ACTUATOR 150PSI RCI 240-DA 143116
PARKER PNEUMATIC ACTUATOR 25CFMRCAUC
SKF ACTUATORS LINEAR ACTUATOR CAT33 SERIES 24VDC MOTOR ...