3、设定重试次数（D8179）范围0~10，默认3，从站不需要设置此参数。4、设置通讯时（D8180）范围5~255，默认5，此数值乘以10mS就是时时间。5、参数设置：6、注意事项：a、选择N：N网络时必须采用半双工通讯试验题：A、主站点的输入点X0~X3（M1000~M1003），输出到1和2站的输出点Y10~Y13B、从站1的输入点X0~X3（M1064~M1067），输出到主站和2站的输出点Y14~Y17C、从站2的输入点X0~X3（M1128~M1131），输出到主站和1站的输出点Y20~Y23D、1#D10+2#D20=0#D3E、0#D0+2#D20=1#D11F、0#D0+1#D10=2#D21
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