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S7-1200 PLC与V20变频器Modbus通讯详细指南
9.可以通过观察模块的通讯指示灯可以观察通讯是否成功,如果TX,RX交替闪烁即为通讯成功。 关键字:S7-1200 PLC Modbus通讯引用地址:S7-1200 PLC与V20变频器Modbus通讯详细指南 1 引言 在自动控制领域,PLC 和单片机都受到广泛应用。PLC 具有稳定可靠,抗干扰能力强 ...
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