LG Electronics 120S Universal Remote User Manual


 
Chapter 8 Communication Functions
8-76
8.5.2 Communication I/F module
MASTER-K120S series supports various kinds of communication I/F module.
In this time, Built-In Cnet in main unit must be set to ‘Off’ as below and only one communication module can be extended
1) Usage of G7L-CUEB
Using G7L-CUEB, MASTER-K120S can connect to other PLC by dedicated modem or dial-up modem
Set TM/TC switch to ‘On’ when uses remote connection function
Set TM/TC switch to ‘Off’ when uses data communication function
Data communication and remote connection function are not allowed simultaneously
Data communication mode supports every communication protocol but In remote connection function supports dedicated
protocol only.
2) Usage of G7L-CUEC
Channel 0 can be used as RS-422/485 I/F by using G7L-CUEC I/F module
Operating method is same as built-in Cnet interface and wiring is as below
Wiring Example : RS-422 I/F
BUILT_IN CNET
ROM MODE
OFF ON
Must be off
TM/TC Switch
RDA
RDB
S
DA
S
DB
SG
Master
Slave Slave Slave
RDA
RDB
S
DA
S
DB
SG
RDA
RDB
S
DA
S
DB
SG
RDA
RDB
S
DA
S
DB
SG
Terminating
resistor