在標(biāo)準(zhǔn)掃描中,每次掃描將隨每-次掃描所耗時間量的變化而盡快執(zhí)行,對此的–種變法就是恒定掃描時間模式,其中每次掃描將消耗同樣的時間量。對于恒定掃描定時器:一個5-200ms的數(shù)值可供選擇(缺省值為100ms)。由于PLC掃描不同部分所需時間不同,當(dāng)PLC處于一般掃描模式時,恒定掃描定時應(yīng)設(shè)置成比按狀態(tài)行所顯示的掃描時間至少高出10ms。這樣就將防止無關(guān)的重疊掃描錯誤的出現(xiàn)。

ELREST 10503031 OPERATOR INTERFACE

MITSUBISHI FX-48MR-ES/UL, FX-EEPROM-4 PROGRAMMABLE CONT

HEIDENHAIN CORP EXE 611 INTERPULATION BOX SIGN WAVE TO

IAI CORPORATION SEL-A-2-DC-100 SUPER SEL CONTROLLER

ARSENIC 030-155-332 HOLLOW CATHODE LAMP

YASKAWA USAREM-01CE2TX AC SERVO MOTOR

LUCAS SCHAEVITZ 119C9638-1 LINEAR TRANSDUCER

Lot of 14 PHOENIX CONTACTS FLKMS 40 2281584 INTERFACE M

Siemens KSP-P218-A32 PC Board

Siemens KSP-A361 PCB Card

Siemens TDS120/25Y Servo Drive Rack Mount W/ Siemens

ElRest 10803036 Operator Interface 1

Kniel 140-015-02 Linear Power Supply

Premisys 600-820220 Circuit Board

Sylvania T13U030 Magnetic Starter TYPE TM

TCA-1001-R3 MFR 05QV2 Circuit Board

Hurco 415-0252-001 Digital Spindle Controller

Speck Pumpen NPY-2051.0639 Vacuum Pump

Siemens 3TK2804-0BB4 Contactor Combination Enabling Sig

Allen-Bradley 1771-IAD Input Module 120VAC/DC 16POINT .

Siemens KSP-A360 Axis Control Board

Rocky ROCKY-3702EV-R4?-US Socket 370 Celeron

Sanki PFC-110AN Feeding System Controller