发表于:2001-11-15 18:16:00
1楼
to use simple DDE protocol,
item name from modbus bus are integer number,
i.e 30001, or 40002
but you must know which protocol type of your modbus
484, 584 or 684 addressing.
if 484 type , item as 3001
if 584 type , item as 30001
if 684 type , item as 300001