User's Manual
7. COMPUTER LINK CONNECTION
7.5 PLC Side Setting
7 - 23
1
PREPARATORY 
PROCEDURES FOR 
MONITORING
2
DEVICE RANGE 
THAT CAN BE SET
3
ACCESS RANGE 
FOR MONITORING
4
HOW TO MONITOR 
REDUNTANT 
SYSTEM
5
BUS CONNECTION
6
DIRECT 
CONNECTION TO 
CPU
7
COMPUTER LINK 
CONNECTION
8
ETHERNET 
CONNECTION
(2) When connecting to the CH2 side
*1 The module operates under the following transmission 
specifications.
*2 The serial communication module operates at the 
transmission speed set on the GOT.
*3 When the value of switch setting is other than "0", the setting 
of [Format] and [Transmission Speed] on the GOT side are 
required to be changed.
7.4.2 Communication detail settings
POINTPOINTPOINT
(1) When the [intelligent function module switch 
setting] has been set
After writing PLC parameters to the PLC CPU, 
turn the PLC CPU OFF then back ON again, or 
reset the PLC CPU.
(2) Connection of multiple GOTs
To some serial communication module models, 
two GOTs can be connected using both CH1 and 
CH2.
: 2 GOTs connectable,  : 1 GOT connectable, -: Not applicable
(3) When connecting to the modem interface module
When the modem interface module is connected, 
only CH2 can be used.
Switch
No.
Bit
Description
Set 
value
*3
Positi
on
Specifi
ed 
value
Switch 3
b0 OFF
CH2
transmiss
ion 
settings
*1
Operation 
setting
(Operates 
according 
to the GOT 
side 
specificatio
ns.)
0000
H
b1 OFF Data bit
b2 OFF
Parity
bit
b3 OFF
Even/odd 
parity
b4 OFF Stop bit
b5 OFF
Sum 
check 
code
b6 OFF
Write 
during 
RUN
b7 OFF
Setting 
modifica-
tions
b8 to 
b15
―
CH2 transmission 
speed setting
*2
Switch 4 ―
CH2 Communication 
protocol setting
GX 
Developer 
connection
0000H
Switch 5 ― Station number setting 0th station 0000H
Transmission specifications Setting details
Operation setting Independent
Data bit 8bits
Parity bit Yes
Even/odd parity Odd
Stop bit 1bit
Sum check code Yes
Model
Connection of 2 GOTs
Function version A Function version B
QJ71C24(-R2)
QJ71C24N(-R2/R4) -
LJ71C24(-R2) -










