1SBP260150R1001 ABB I/O模块

1SBP260110R1001
1SBP260106R1001
1SBP260105R1001
1SBP260104R1001
1SBP260103R1001
1SBP260102R1001
1SBP260101R1001
1SBP260100R1001
1SBP260054R1001
1SBP260052R1001
1SBP260051R1001
1SBP260024R1001

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Description

梯形图程序解析完毕,就开始执行步骤4,即读取I/O模块的信号。这时,送到I/O模块和来自I/O模块的信息都会被检验两次,以确认在这一时刻的解释无误。这一步完成后,PLC就进入步骤5,这一步检查所有的外部通讯接口,比如计算机、人机界面、或任何形式的外部连接设备,此时,PLC也可以检测到外部来的输入信号。

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