Motherboard digital input port: the instrument main board provides 3 programmable input port. receives the passive contact switch signal.
主板数字输入端口．仪表主板提供3个可编程输入端口，接收无源触点开关信号。
Motherboard digital input port: the instrument main board provides 3 programmable input port. receives the passive contact switch signal.
主板数字输入端口．仪表主板提供3个可编程输入端口，接收无源触点开关信号。
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