P0971WV FOXBORO

FOXBORO P0971WV
FOXBORO P0926JM
FOXBORO P0916AG
FOXBORO P0926HF
FOXBORO P0926AH-B
FOXBORO P0973BU

分类: 标签:

Description

PLC按照梯形图程序扫描原则,一般来说,PLC按从左至右、从上到下的步骤逐个执行程序。但遇到程序跳转指令,则根据跳转条件是否满足来决定程序跳转地址。程序执行过程中,当指令中涉及输入、输出状态时,PLC就从输入映像寄存器中“读入”对应输入端子状态,

Siemens Power Supply 575-6663 NEW 5756633

ALLEN BRADLEY 2711E-T10C6 REMAN. 2711ET10C6

MODICON 140-CPU-434-12A USED 140CPU43412A

MODICON 140NOE77111 NEW 140-NOE-771-11