3RA1110-1AA15-1BB4
3RA1110-1AA15-1BB4
7中定時(shí)時(shí)間由時(shí)基和定時(shí)值兩部分組成,定時(shí)時(shí)間等于時(shí)基與定時(shí)值的乘積。當(dāng)定時(shí)器運(yùn)行時(shí),定時(shí)值不斷減1,直至減到0,減到0表示定時(shí)時(shí)間到。定時(shí)時(shí)間到后會(huì)引起定時(shí)器觸點(diǎn)的動(dòng)作。
定時(shí)器的第0到第11位存放BCD碼格式的定時(shí)值,三位BCD碼表示的范圍是0~999。第12,13位存放二進(jìn)制格式的時(shí)基。
從下表中可以看出:時(shí)基小定時(shí)分辨率高,但定時(shí)時(shí)間范圍窄;時(shí)基大分辨率低,但定時(shí)范圍寬。
時(shí) 基 | 二進(jìn)制時(shí)基 | 分辨率 | 定 時(shí) 范 圍 |
10 s | 00 | 0.01 s | 10ms至9s_990ms |
100ms | 0l | 0.1 s | 100ms至1m_39s_900ms |
1 s | 10 | 1s | 1s至16m_39s |
10 s | 11 | 10 s | 10s至2h_46m_30s |
當(dāng)定時(shí)器啟動(dòng)時(shí),累加器1低字的內(nèi)容被當(dāng)作定時(shí)時(shí)間裝入定時(shí)字中。這一過程是由操作系統(tǒng)控制自動(dòng)完成的,用戶只需給累加器l裝入不同的數(shù)值,即可設(shè)置需要的定時(shí)時(shí)間。
1791
MFR. PART NUMBER DESCRIPTION
ALLEN BRADLEY 1791-OA16 I/O BLOCK 120VAC 16 POINT OUTPUT
ALLEN BRADLEY 1791-OA32 /O BLOCK 120VAC 32 POINT MODULE
ALLEN BRADLEY 1791-OB16 I/O BLOCK 24VAC 16 POINT OUTPUT
ALLEN BRADLEY 1791-OB32 I/O BLOCK 24VAC 32 POINT OUTPUT
ALLEN BRADLEY 1791-16AO I/O BLOCK 120VAC 16 POINT MODULE (16 INPUT)
ALLEN BRADLEY 1791-16AC I/O BLOCK 120VAC 32 POINT
ALLEN BRADLEY 1791-16BO BLOCK I/O EXPANSION 24VDC 16 IN SINK RTB
ALLEN BRADLEY 1791-16BC I/O BLOCK MODULE 24VDC 32 POINT
ALLEN BRADLEY 1791-24A8 I/O BLOCK 120VAC 32 POINT MODULE
ALLEN BRADLEY 1791-24AR I/O BLOCK 120VAC 32 POINT MODULE
ALLEN BRADLEY 1791-24B8 BLOCK I/O, 24V DC, 32 POINT MODULE
ALLEN BRADLEY 1791-24BR BLOCK I/O, 24V DC, 32 POINT MODULE
ALLEN BRADLEY 1791-32AO /O BLOCK 120VAC 32 POINT INPUT MODULE
ALLEN BRADLEY 1791-32BO I/O BLOCK 24V DC 32 POINT MODULE
ALLEN BRADLEY 1791-8AC I/O BLOCK 120VAC 16 POINT MODULE
ALLEN BRADLEY 1791-8AR I/O BLOCK 120VAC 16 POINT MODULE
ALLEN BRADLEY 1791-8BC I/O BLOCK 24VDC 16 POINT MODULE
ALLEN BRADLEY 1791-8BR I/O BLOCK 24VDC 16 POINT MODULE
ALLEN BRADLEY 1791-AIC ISOLATED LINK COUPLER
ALLEN BRADLEY 1791-IOBA I/O BLOCK 24VDC 16 POINT
ALLEN BRADLEY 1791-IOBB I/O BLOCK 24VDC 16 POINT
ALLEN BRADLEY 1791-IOBW I/O BLOCK 24VDC 64 PT MODULE
ALLEN BRADLEY 1791-IOBX I/O BLOCK 24VDC 128POINT MODULE
ALLEN BRADLEY 1791-IOVW I/O BLOCK 24VDC 64 POINT MODULE
ALLEN BRADLEY 1791-IOVX I/O BLOCK 24VDC 128POINT MODULE
ALLEN BRADLEY 1791-N4C2 I/O BLOCK 120VAC 6 POINT ANALOG MODULE
ALLEN BRADLEY 1791-N4V2 I/O BLOCK 120VAC 6 POINT ANALOG MODULE