6: M
ODBUS
C
OMMUNICATION
6-10
FC6A S
ERIES
M
ICRO
S
MART
A
LL
-
IN
-O
NE
T
YPE
C
OMMUNICATION
M
ANUAL
FC9Y-B1730
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 FC6A Series MicroSmart 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, select
Modbus RTU Slave
.
3.
Click the
Configure
button. The
Modbus RTU Slave
dialog box appears. Change settings, if required.
4.
Click the
OK
button to save changes.
5.
Download the user program to the FC6A Series MicroSmart.
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 D8100 (port 1), D8102 (port 2), or
D8103 (port 3) is used.