當(dāng)START和END的值設(shè)置相等，程序循環(huán)僅執(zhí)行一次。當(dāng)START的值不能增加/減少到END的值時，不執(zhí)行循環(huán)語句。例如，START的值10,END的值是5，INCREMENT的值是1，能流直接從FOR語句跳轉(zhuǎn)到END_ FOR語句后面的語句。

YOKOGAWA VR204-0/A2/D2 NSFP VR2040A2D2

ALLEN BRADLEY 2711-B6C3 USPP 2711B6C3

SIEMENS 6ES5-944-7UA12 USPP 6ES59447UA12

HOFFMAN X-FC1486 NSFP XFC1486

GENERAL ELECTRIC 531X309SPCAJG1 USPP 531X309SPCAJG1

ALLEN BRADLEY 1336-B005-EAD-F?A2-S1 USPP 1336B005EADFA2S?

WESTINGHOUSE 7381A93G01 USPP 7381A93G01

EDWARDS K12-R12 NSPP K12R12

ALLEN BRADLEY 1400-PB12A USPP 1400PB12A

ALLEN BRADLEY 1771-LIA2 NSFP 1771LIA2

HEWLETT PACKARD TEST & MEASURE 6253A USPP 6253A

WESTINGHOUSE 289B142A15 USPP 289B142A15

ALLEN BRADLEY 1771-KE NSFP 1771KE

FORNEY 32860201 USPP 32860201

SQUARE D CKAD36008SA2DED?O NSFP CKAD36008SA2DED?O

TELELINE TK121FK504 FNFP TK121FK504

SIEMENS 6ES5-308-3UC21 NSPP 6ES53083UC21