汇川PLC通信手册(H2u系列)

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1、H1u/H2u系列PLC通信手册概述..................................................................................................................................................31.硬件及通信连线..................................................................................................................

2、.....32.HC2u通信协议切换逻辑说明................................................................................................42.1COM0协议切换逻辑...................................................................................................42.2COM1协议切换逻辑...........................................

3、........................................................42.3串口通信格式设置.......................................................................................................52.4串口通信格式设置软元件一览表...............................................................................63.通信协议说明...........

4、................................................................................................................73.1监控协议.......................................................................................................................73.2并联协议.........................................

5、..............................................................................73.3N:N协议.......................................................................................................................93.4计算机链接协议.......................................................................

6、..................................103.5RS指令.......................................................................................................................103.6MODBUS从站协议...................................................................................................103.7MODBUS指

7、令...........................................................................................................11附件1：..........................................................................................................................................15H1u/H2u系列PLCMODBUS