2.2.2.4 Programming the other SG2(ID=0~6)，setting function block L1 working
mode as follows；
2.2.2.5 Running all SG2’s programs，control SG2 (ID＝7)，When coil I1 is d ON，
coils M1~M8 is ON；
2.2.2.6 Observing other SG2(ID=0~6)，the states of coils M1~M8 is changed from
the states of coils M1~M8 of SG2(ID=7)；
2.3 Modbus Slaver Station Function：
2.3.1 Function Describe：
SG2 is a Modbus slaver station，By Modbus communication protocol，it can be read or
wrote coils states and the preset value of function blocks，it also can be read the current value of
function blocks and can control SG2 to run or stop；
2.3.2 System setting：
2.3.2.1 Connected A and B lines of some V-type SG2 with a Modbus master
station，as Figure3；
2.3.2.2 Setting N（No Remote IO）for the instance of all SG2’s menu SET--
REMOTE I/O；
2.3.2.3 Setting nonzero for the instance of each of SG2’s menu SET--ID SET，ID
number is 01～99；
Figure3：Modbus communication connection
Modbus
Master station
V-SG2 A B
ID＝01
V-SG2 A B
ID＝n（02~99）
2
8 M01 08
L1
W57 64
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