AB121 ALSTOM
AB121 ALSTOM
AB121 ALSTOM
·本机具有通过RS-232C接口进行通信的功能，并能够与上位计算机等进行双向数据传输。
·通信系统由主机和子机构成。每台主机可以连接1台子机(本机)。
并且，借助RS-232C RS485变换器，还可以适应RS-485的接口环境。这样，1台主机最多可以连接31台子机(本机)。
·由于每次可以通信的子机仅1台，所以主机要通过在各子机设定的“站号No.”确定通信对象。
·为了主机和子机之间的通信，收、发信数据的格式必需一致。本机根据MODBUS通信协议确定了通信数据格式。
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