當(dāng)當(dāng)前值(CV)等于預(yù)設(shè)定值(PV)時(shí),此功能就停止向右傳送電流。當(dāng)這現(xiàn)象出現(xiàn)時(shí)，定時(shí)器就停止累積時(shí)間–參看下而的C部分。當(dāng)此功能再次接收到電流時(shí),電流值復(fù)位至0。當(dāng)OFDT用于一個(gè)不是每次掃描都調(diào)用的程序塊時(shí)，定時(shí)器可累加程序塊的調(diào)用時(shí)間,直到定時(shí)器復(fù)位為止。此意即為:其作用類似于一個(gè)定時(shí)器以低于在主程序塊中更慢些的掃描在一個(gè)程序中操作。對(duì)于長(zhǎng)時(shí)間處于非激活態(tài)的程序塊,定時(shí)器應(yīng)在編程時(shí)考慮這一功能

AMAT 3880-0111 Washer LKG EXT T 1/4 .5060D x .256ID

18 AMAT# 3300-06439 FGT TBG PLUG 1/4T ONE-TOUCH

Depth filter tubes 901-10CP10P, 10 Poly x Fine PP

4 AMAT 1000-01006 Knob Head for #10 SKT HD SCR Nylo

1 Lamp 388 Indicator M01268-CQ-11-02?O

AMAT 3690-01792 Scrap SKT HD 10-32 x 2.5L HEX SKT SST,

AMAT 3200-01182 Cover Map DEV Front

AMAT 3300-04147 90 elbow

2 AMAT 3300-02493 Fitting tube CAP OD 1/4″ NPTF 1/8

Swagelok VCR Fitting SS-8-VRC-CP

AMAT 0020-30329 SCREW 2-30056500-452

AMAT 3780-00036 Compression Spring

AMAT 3880-01026 Washer LKG Split #1/4 .487OD x .2601D x

AMAT 3880-01045 Washer Flat #1/4 .500OD x .265ID x .036