使用恒定掃描時(shí)基模式的一個(gè)原因是可以保證V0在恒定時(shí)間間隔內(nèi)被更新。另一個(gè)原因是保證輸出掃描和下次掃描的輸人掃描之間有一定量的時(shí)間間隔,使從程序中接收輸出數(shù)據(jù)后接收輸入信號(hào)。如果在掃描完成前恒定掃描定時(shí)器計(jì)滿，則包括窗口在內(nèi)的整個(gè)掃描便完成。不過,在下次掃描開始時(shí)會(huì)記錄一個(gè)重疊掃描錯(cuò)誤。

Sanki PFC-110AN Feeding System Controller

419231-01B Keypad W/ Display

Modicon PC-0984-680 Programmable Controller

IWATSU IX-16PSUB 16 Port Station Circuit Board

Mitel 9400-300-312NA Control Resource III Card

Mitel MC312AB Peripheral Switch Controller II

GE Fanuc IC610CHS130A Rack W/ Hi Cap Power Supply/10

466482 00 Circuit Board

Modicon AS-H827-209 Primary Rack 11Slot

PB235501 E.S. Controller Board

PB228602 Omega Expansion System

PB1742-04 Combination Interface Board

Lucent PWPQAEDAAA Power Unit 430 AB S1:1

JC Systems C83240-188 Dual Setpoint Programmer

Pelco VA-112 Sequential Switcher

Adept 87A243 8A840/4727 Motor Encoder

Robicon 463990.01 REV M Power Interface Control Board

Polyspede PRD8 E1511E-02 Driver Board

Protection Controls M2101 Protectofier Flame Safety U

Lot of 5 Allen-Bradley 1305-BA06A Micro Drives 380-480V

Lot of 74 Opto 22 G4 0DC5 Output Modules 60VDC 3A

Habermann 1445-0015-00000 Transformer PRI:400/470V SEC:

Habermann 1372-0107-00000 Transformer PRI:230V SEC:20V