11: M
ODBUS
C
OMMUNICATION
11-10 S
MART
AXIS P
RO
/L
ITE
U
SER
'
S
M
ANUAL
FT9Y-B1378
Programming Modbus Slave Using WindLDR
Modbus slave communication is programmed for Modbus RTU mode using WindLDR. Since these settings relate to the user
program, the user program must be downloaded to the SmartAXIS after changing any of these settings.
1. From the WindLDR menu bar, select Configuration > Communication Ports.
The Function Area Settings dialog box for Communication Ports appears.
2. In the Communication Mode pull-down list for Port 2, select Modbus RTU Slave.
3. Click the Configure button. The Communication Parameters dialog box appears. Change settings, if required.
4. Click the OK button to save changes.
5. Download the user program to the SmartAXIS.
Now, programming for the Modbus slave is complete. Details about parameters and valid values are as follows.
Baud Rate
(bps)
9600
19200
38400
57600
115200
Data Bits 8
Parity Even, Odd, None
Stop Bits 1 or 2
Slave Number
Constant 1 to 247
Data register
The value in D8027 (port 2) or D8028 (port 3) is
used
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