Event 1 of 9: Event ID 16# F1C8:0830



IF 1: Receive Error



Incoming event



说明：发送请求已经发出但是没有回应，或者回应不正确。

建议检查通信线，通信双方的波特率，奇偶效验，从站状态是否一致。

同时为测试模块状态应使用modbus slave 调试软件与电脑进行通信测试，保守起见应从站也与电脑进行测试一下。



08 30H error: request message has been sent and the reply monitoring time has elapsed without the start of a reply message being recognized.

Check if transmission line is interrupted (interface analyzer

may be required).

Check if the protocol parameters transmission rate,amount of data bits, parity, and amount of stop bits have the same settings in CP and the link partner.

Check if the value for the reply monitoring time set with

PtP_PARAM is big enough.

Check if the specified slave address is right。