3BHE021951R0124 ABB

MVI56 AB
SK-G9-GDB1-D481 AB
321131-A01 AB
314066-A02 AB
1336-SN-SP10A AB
394877-A02 AB
16MAR12 AB
09MAR12 AB
01FEB12 AB

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描述

PLC的I/O点的价格还比较高,因此应该合理选用PLC的I/O点的数量,在满足控制要求的前提下力争使用I/O点最少,但必须留有一定的备用量。通常I/O点数是根据被控对象的输入、输出信号的实际需要,再加上10%-15%的备用量来确定。

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