Network 1
LD SM0.1
R M0.0, 5
Network 2
LD SM0.0
= L60.0
LD SM0.0
= L63.7
LD L60.0
CALL MBUS_CTRL, L63.7, 9600, 0, 0, 50, M0.0, VB0
Network 3
LD M0.0
EU
S M0.1, 1
Network 4
LD M0.1
O M0.4
= L60.0
LD M0.1
O M0.4
EU
= L63.7
LD L60.0
CALL MBUS_MSG, L63.7, 1, 1, 40001, 2, &VB100, M0.2, VB1
Network 5
LD M0.2
EU
R M0.1, 1
R M0.4, 1
Network 6
LD M0.2
= L60.0
LD M0.2
EU
= L63.7
LD L60.0
CALL MBUS_MSG, L63.7, 2, 1, 40001, 2, &VB200, M0.3, VB2
Network 7
LD M0.3
EU
R M0.2, 1
Network 8
LD M0.3
= L60.0
LD M0.3
EU
= L63.7
LD L60.0
CALL MBUS_MSG, L63.7, 2, 0, 40005, 2, &VB300, M0.4, VB3
Network 9
LD M0.4
EU
R M0.3, 1
你按照这个程序实验下，我不知道你用的什么变频器？所以你得修改下保持寄存器地址，如果还是不能正常读写，那100%是你的变频器参数设置有问题，或者你读写的保持寄存器地址不对，