IMCIS22
IMCIS22
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PLC的編程技巧及實例分析
利用PLC進行程序編制時，為了減少指令條數(shù)，節(jié)省內(nèi)存和提高運行速度，應(yīng)掌握以下編程技巧。
(1)把串聯(lián)觸點多的電路編在上方，如圖8-4所示，可見（b）形式減少使用ORB指令或多重輸出指令等。
(2)并聯(lián)觸點多的電路放在左邊，如圖8-5所示，可見（b）形式減少使用ANB指令。
(3)多重輸出電路，將串聯(lián)接點多的電路放在下邊，如圖8-6所示，可以不使用MPS、MPP指令等。
：祖巧麗
：
主 營 業(yè) 務(wù)：AB，ABB，GE，本特利，?？怂共_，英維斯，西屋，艾默生，橫河
(4)如果電路復(fù)雜，采用ANB、ORB等指令實現(xiàn)比較困難時，可以重復(fù)使用一些觸點改成等效電路，再進行編程，如圖8-7所示。
MCC 115°F MAX TEMP. 100PSI HYDROGUARD THERMOSTATIC MIXING VALVE 431-2065 *NEW*
BADGER METER INC. RESEARCH CONTROL VALVE POSITIONER P78S
MAC 24VDC 2.4W 150 PSI PNEUMATIC SOLENOID VALVE, 82A-BC-000-TM-D?FFP-1DA *NEW*
SMC VFR4200-5FZ SOLENOID VALVE 0.1-0.9MPA NEW
PARKER 120VAC, 60Hz, 6.0W, PNEUMATIC SOLENOID VALVE L7352830253VXB *NEW*
CHESTERTON SELF-ALIGNING STATIONARY SEAL SASE-09 SU SC/S
ROSS CONTROLS 20 BAR 3/4" NPT LOCKOUT & EXHAUST VALVE, D1523C5012 *NIB*
SMC SOLENOID VALVE VG342 0.2-0.9MPA VO307-5DZ NEW
ROBERTSHAW 3-15PSI BRASS DIAPHRAM ACTUATOR VALVE VC-231A-BG
ROSS VALVE BODY SERVICE KIT W744K87 *NEW*
MASONEILAN 3-15PSI 18" ACTUATOR J-14571-1-2
WILLIAMS 300 WCB 2-/12" GATE VALVE UXT2
JAMESBURY 3" CG8M VALVE ACTUATOR R21CB03CCJL W/ PMV POSITIONER P-2000
ITT FABRI-VALVE 150 CWP 10" KNIFE GATE VALVE C37S316
FESTO CPV10-VI M402 CPV10-GE-ASI-8E?8A-Z-M8 LD07 MANIFOLD W/ (2) 161 368 M202
PAGET 1-1/2" NPT CAST IRON Y STRAINER, SC11/2
VICKERS 110/120V 50/60HZ DIRECTIONAL PILOT VALVE, DG4S4LW-012N-WB?-51
ASCO SOLENOID VALVE EF8210G88
FISHER 3 TO 15PSI VALVE POSITIONER 41B8558X0A2
1" SHUT-OFF BALL VALVE PN40 MS58
AUTOMATIC VALVE 120V 150 PSIG PNEUMATIC SOLENOID VALVE, 407B67S31C-AA4
REXROTH 24VDC 1.25A HYDRAULIC DIRECTIONAL VALVE, 4WE-6-J62/EG24N?9K4
FULFLO * RELIEF VALVE * VJ7RV
BURKERT, 12-30V, 230VAC/3A, TEMPERATURE THRESHOLD DETECTOR/TRANSM?ITTER, 436506W
UL 1" THREAD /2" THREAD OUTLET BOX XJAB-890
ITT ENGINEERED VALVES FABRI-VALVE 150CWP 10" KNIFE GATE VALVE C37S316P01
NUMATICS REGULATOR SOLENOID VALVE WITH MANIFOLD I35RQ115J000000 *NEW,SEALED*
FESTO 36PSI/0.25mPA, 19-26,4VDC STARTER VALVE HEE-D-MIDI-24
NELES JAMESBURY QUADRA-POWR II ACTUATOR QP5C/ K40 W/ 8" VALVE L25CMP02AA
PARKER FLOW CONTROL VALVE C1220S
JOHNSON CONTROLS SIZE-1 TEMPERATURE WATER VALVE V47AD-1 102470
PARKER CHECK VALVE CM3PPN 500
SMC SOLENOID VALVE VX3134V-01N-5DZ?1-B
KEYSTONE 10" THIN-DISC RESILIENT SEAT BUTTERFLY VALVE 992, NNB
LUBRIQUIP MANIFOLD DIVIDER VALVE MJ J05 5T LOT OF 2
FABRI-VALVE 8IN STAINLESS STEEL GATE VALVE F440572 103263
