END_ FOR語句在一個梯級邏輯中必須是唯一的。一個FOR_LOOP可以通過設(shè)置一個負的增加量給下標變量遞減賦值。例如如果START的值21，END的值是1，增加值是-5，執(zhí)行5次程序循環(huán)，下標變量每次減少5，下標變量的值依次是21，16,11,6和1.

BLACK BOX CORP SP-3-SDP NSPP SP3SDP

MAYR 4/436.705.8 USPP 44367058

PNEUMATIC DIVISION ET080B02LA000N USPP ET080B02LA000N

MODICON MM-PMC1-200 USPP MMPMC1200

ALLEN BRADLEY 1336S-BRF30-AA-?EN5 NSFP 1336SBRF30AAEN5

DEFINOX DPAX-4-O NSPP DPAX4O

CANDY CONTROLS DIFF-1 NSFP DIFF1

KEYENCE CORP CV-2100 USPP CV2100

BARBER COLMAN 41AA-22002-200-?1-00 USPP 41AA22002200100

MOORE PRODUCTS 157-3675 NSPP 1573675

RVSI ACUITY CIMATRIX 7655 USPP 7655

LEROY SOMER UMV-4301-2.5T USPP UMV430125T

RELIANCE ELECTRIC 45C-20 USPP 45C20

RELIANCE ELECTRIC 0-51893-3 NSFP 0518933

CONTROL TECHNIQUES 95DSC300HAAAA USPP 95DSC300HAAAA

COMPAQ COMPUTER 3R-A2975-AA USPP 3RA2975AA