Wecon LX3V-ETH-BD User manual

WECON
LX3V-ETH-BD
User manual
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FUZHOU FU CHANG WECON ELECTRONICS TECHNOLOGY CO., LTD.
1. The installation instructions
Before the installation make sure that the PLC host and the equipment connected to bd board have
been powered off. Please install the BD module in the corresponding position of the PLC, and lock the four
standard screws. In case of the dust interference, please cover BD right part by PLC’s cover.
Note:
1) Install the board firmly on the PLC. Poor contact may cause malfunction.
2) The suggested tightening torque is 0.3-0.6 N.m.
Warning:
1) Disconnect the power supply before installing/removing the board and wiring in case of electric
shock or product damage.
2) The After completing the installation and wiring, do not replace the PLC top cover before turning
on the power.
Supported version:
LX3VP：25103 , 16050;LX3VE：25201, 16050.
LX3VP：25105、16000 or higher version，LX3VE：25203, 16000 or higher version.
2. Key Features
1) Maximum number of connections 8, regardless of master and slave.
2) The current protocol only supports: MODBUS-TCP.
3. The shape and terminal description
1) The case of one BD board
2) The case of two BD board

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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) Sis the address of slave (high byte) and communication command (low byte, defined by MODBUS
protocol);
2) mis 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.

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3) nis the starting address of the storage unit for reading or writing data, occupying the subsequent
address unit, and the length is determined by the “D”;
4) n1 is the connection number corresponding to the Ethernet port connection number (specific
settings is shown as the following table 4-3).
Table 4- 3
Ethernet port 1
Connection number
Ethernet port 2
Connection number
Connection 1
1000
Connection 1
1100
Connection 2
1001
Connection 2
1101
Connection 3
1002
Connection 3
1102
Connection 4
1003
Connection 4
1103
Connection 5
1004
Connection 5
1104
Connection 6
1005
Connection 6
1105
Connection 7
1006
Connection 7
1106
Connection 8
1007
Connection 8
1107
If n1 is set as k1002, then RS2 is configured for Ethernet port 1 , connection 3. When x1 is ON, the
data is shown as below.
Instruction format:
00 03(numbers of transmission), means has sent 3 times;
00 06(the length of Modbus instruction, like 01 03 00 64 00 04;
01 03(station number and function code); 00 64(starting address0; 00 04(the length of address)
4.2 CPAVL Instructions
Table 4- 4
Name
Function
16 bit
Pulsed
Instruction format
Steps
CPAVL
Communication port parameters
√
No
CPAVL S D M
11
Table 4- 5
Operand
Bit device
Word device
X
Y
M
S
K
H
KnY
KnM
KnS
T
C
D
V
Z
S
√
D
√
M
√
√
RS2 instruction
RS2 instruction
The sending 00 03 00 00 00 06 01 030 00 64 00 04
Description: Read the data of the slave ranges from 100 to 103,
and transfer the data toD4,D5,D6,D7.

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1) Sis the starting address of the D device parameter table ranges from D0 to D7999. ( try to store in
the latched area in case of data loss).
2) Dis the starting address of the M device parameter table ranges from M0 to M3071. ((try to store
in the latched area in case of data loss).
3) Mis the connection number, set the number according to the Ethernet port. ( See the table
below for specific settings).
Table 4- 6
Connection number description
CPAVL
instruction
port
Connection number
Ethernet port 1
1000
Ethernet port 2
1100
Note:
Only need one CPAVL instruction to configure multiple connections. The RS instruction needs to be
used for the corresponding connection
5. Ethernet parameter settings
The parameters of LX3V-ETH-BD module are configured by the CPAVL instruction. The specific address
of the D device and M device in the CPAVL instruction is shown in the following table.
5.1 D Device
Table 5- 1
Word
address
D device
Description
Others
Read or
write
S+0
Version
Parameters
for BD
module
R
S+1
IP for BD module
IP Section 1
R/W
S+2
IP Section 2
R/W
S+3
IP Section 3
R/W
S+4
IP Section 4
R/W
S+5
Port
Default value is K502
R/W
S+6
Gateway
Gateway section 1
R/W
S+7
Gateway section 2
R/W
S+8
Gateway section 3
R/W
S+9
Gateway section 4
R/W
S+10
Subnet mask
Subnet mask section 1
R/W
S+11
Subnet mask section 2
R/W
S+12
Subnet mask section 3
R/W
S+13
Subnet mask section 4
R/W
S+14
MAC
MAC section 1
R
S+15
MAC section 2
R
S+16
MAC section 3
R

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S+17
MAC section 4
R
S+18
MAC section 5
R
S+19
MAC section 6
R
S+20
Reserved
R/W
S+21
Total disconnect
time
*1
When plc serves as slave, and there is no
communication within specific time, then
the communication will be disconnected.
Unit: S (seconds), Default: 0 (10 seconds)
R/W
S+22
Number of
connections (max 8)
R/W
S+23
Protocol
Communication protocol
Parameters
for
connection 1
R/W
S+24
Slave IP
IP section 1
R/W
S+25
IP section 2
R/W
S+26
IP section 3
R/W
S+27
IP section 4
R/W
S+28
Port
Default is K502
R/W
S+29
Reserved
R/W
S+30
Command send
interval
Default is 0.1 ms
R/W
S+31
Reserved
R/W
S+32
Disconnect time
When plc serves as slave, and there is no
communication within some time, then
the communication will be disconnected.
Unit: S (seconds), Default: 0 (10 seconds)
R/W
S+33
Reserved
R/W
S+34
Timeout
R/W
S+35
Protocol
Communication protocol
Parameters
for
connection 2
R/W
S+36
Slave IP
IP section 1
R/W
S+37
IP section 2
R/W
S+38
IP section 3
R/W
S+39
IP section 4
R/W
S+40
Port
Default is K502
R/W
S+41
Reserved
R/W
S+42
Command send
interval
Default is 0.1 ms
R/W
S+43
Reserved
R/W
S+44
Reserved
R/W
S+45
Reserved
R/W
S+46
Timeout
R/W

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FUZHOU FU CHANG WECON ELECTRONICS TECHNOLOGY CO., LTD.
S+47
……
……
……
……
*1. Disconnect time : only LX3VP(25105,16003）and LX3VE（25203,16003）or higher version can
support this function.
Disconnect time : When plc serves as slave, and there is no communication within specific time(it can
be configured in the program), then the communication will be disconnected.
When the disconnect time of each slave device is non-zero, then the "disconnect time" of each slave
device is used.
When the disconnect time of each slave device is non-zero, and the "total disconnect time" is not zero,
then the "total disconnect time" is used.
1) IP, gateway, subnet mask settings example
For example the IP address is 192.168.1.35, set as follows:
Word address
Decimal
Hexadecimal
1
The IP address of BD
module
192
C0
2
168
A8
3
1
01
4
35
23
MAC display description: 192.168.1.35 51-5b-a8-59-55-68 dynamic
2) Number of connections
The maximum number of connections is 8
The setting of connection number: The number of settings should be the same as the number of
connections.
If the connection number is exceeded, user will get error code in D8067 (means the value is exceeded)
3) Protocol setting
Table 5- 2
Protocol
Value
MODBUS-RTU Slaves
02H
MODBUS-RTU Main site
20H
When LX3V-ETH-BD serves as a slave, user could switch the master equipment.
The specific situation is: when the Ethernet BD serves as a slave, and reach the number of of
connection, one of the master equipment is disconnected, user could connect another master device.
Note:
No need to configure IP address when LX3V-ETH-BD serves as a slave.

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5.2 M Device
Bit address
Description
D+0
Reserved
connection 1
Configuration
D+1
Instruction execution
D+2
Instruction execution state
D+3
Communication error flag
D+4
Reserved
D+5
Reserved
D+6
Reserved
D+7
Reserved
D+8
Reserved
D+9
Timeout flag
D+10
Reserved
connection 2
Configuration
D+11
Instruction execution
D+12
Instruction execution state
D+13
Communication error flag
D+14
Reserved
D+15
Reserved
D+16
Reserved
D+17
Reserved
D+18
Reserved
D+19
Timeout flag
D+20
…
…
5.3 Special device description
When BD board is properly installed and there is no problem with BD board, user could check the BD
Board model in D8170 and D8171.
Table 5- 3
Special address
Description
D8170
Expansion port 1 BD Board Model
D8171
Expansion port 2 BD Board Model

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Note:
The special device could display all BD board model. As the picture shown above, the Ethernet BD
model is HFF20（K -224）according to the position.
6.Examples
6.1 MODBUS Master
1) Ethernet parameter setting
Configure the IP address as 192.168.1.36
Configure port as 502
Configure gateway as 192.168.1.1
Configure subnet mask as 255.255.255.0
Connection number is 2

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2) The parameter setting of two devices connected with the LX3V-ETH-BD
3) Send and receive data to two connected devices
Device 1
Device 2
The protocol of device 1: Modbus master
The IP of the slave is 192.168.1.35
Configure Port number as 502
Configure timeout as 100ms
The protocol of device 2: Modbus master
The IP of the slave is 192.168.1.11
Configure Port number as 502
Configure timeout as 100ms
Station number 01, function code 10(write word)
The start address for writing is 1
The length of address is 1
Write the data of D600 to address 1 in device 1
that is connected with Ethernet port 1
Station number 01, function code 0F(write word)
The start address for writing is 2
The length of address is 10
Write 10 data starting from D800 to the 10
address starting from address 2 in device 2 that
is connected with Ethernet port 1
Use the Ethernet port 1, and the parameter
table start from D300 and0 M300

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6.2 MODBUS Slave
1) The parameter setting of LX3V-ETH-BD:
IP is 192.168.24.155
Port is 502
Gateway is 192.168.24.1
Subnet mask is 255.255.255.0
The connection number is 5
The protocol of device1 is Modbus slave
The protocol of device2 is Modbus slave
The protocol of device3 is Modbus slave
The protocol of device4 is Modbus slave
The protocol of device5 is Modbus slave
Use the Ethernet port 1, and the parameter
table start from D300 and M300

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7.Error Code Description
If an error occurs in the module communication, the special address M8063 is set to 1, and the special
address D8063 will display the error code.
Table 7- 1
Error
code
Value
Description
Value
Description
0
MODBUS Slave address is set incorrectly
20
Ethernet disconnected
1
Data frame length is incorrect
21
Lan cable disconnect (Yellow LED
and green LED extinguished)
2
wrong address
22
Ethernet connection failed
3
CRC Verification error (No CRC check)
23
Ethernet connection timeout
4
Command code is not supported
40
Interaction error between host and
bd board
5
Accept timeout
41
6
data error
42
7
Buffer overflow
43
8
Frame error
44
9
Send timeout
45
10-19
interaction error between host and bd
board
46
47
Error code display description
Table 7- 2
Address
Display value description
D8063
Expansion port 1 Conn 1
10000+ error code
Expansion port 1 Conn 2
10100+ error code
Expansion port 1 Conn 3
10200+ error code
Expansion port 1 Conn 4
10300+ error code
Expansion port 1 Conn 5
10400+ error code
Expansion port 1 Conn 6
10500+ error code
Expansion port 1 Conn 7
10600+ error code
Expansion port 1 Conn 8
10700+ error code
Expansion port 2 Conn 1
20000+ error code
Expansion port 2 Conn 2
20100+ error code
Expansion port 2 Conn 3
20200+ error code
Expansion port 2 Conn 4
20300+ error code
Expansion port 2 Conn 5
20400+ error code
Expansion port 2 Conn 6
20500+ error code
Expansion port 2 Conn 7
20600+ error code
Expansion port 2 Conn 8
20700+ error code
Example: D8063 display 10121(means Ethernet is disconnected in Expansion port 1 connection 2.