LX3V-ETH-BD
2
FUZHOU FU CHANG WECON ELECTRONICS TECHNOLOGY CO., LTD.
3) Light
Note:
When the power light and the com light blink simultaneously (1 Hz), that means the PLC does not
support Ethernet BD.
4. The use of instructions
4.1 RS instruction
Table 4- 1
Name
Function
16 bit Pulsed
Instruction format
Steps
RS2
Transfer serial data
√
No
RS2 S m D n n1
11
Table 4- 2
Operand
Bit device
Word device
X
Y
M
S
K
H
KnY
KnM
KnS
T
C
D V
Z
S
√
m
√
√
√
D
√
n
√
√
√
n1
√
√
√
1)
S
is the address of slave (high byte) and communication command (low byte, defined by MODBUS
protocol);
2)
m
is the starting address number of the slave;
D is the length of the data (read or write), the unit is word. (The specific setting is shown in the
following table 4-2);
Table 4- 2
Function code
Length
Length (HEX)
Write coils
1968
0x7B0
Read coils
2000
0x7D0
Write registers
123
0x7B
Read registers
125
0x7D
POW:
power light, normal state is always bright when
connected.
COM:
the flicker frequency corresponds to communication with
plc.
DATA:
data light blinks if the communication with network is ok
LINK:
when connect to the network then the light is lit, if the
connect is not ok, there will be exterminated or chaotic situation.
