LG GLOFA-GM Series User Manual page 288

Chapter 8 Exercising program
1) Setting items
As in communication via RS-232C channel of Cnet I/F module Ver.2.0, set operation mode and basic
parameters for RS-232C channel. [Table 8.9] describes setting items of Cnet I/F module.
[Table 8.9] Setting items of Cnet I/F module
RS-232C channel setting item
Operation mode
RS-232C station No.
Communication type
RS-232C basic parameters
2) Communication cable connection and basic setting
RS-232C communication channel of temperature controller is connected with Cnet RS-232C channel. If
Handshake-free type of null modem communication is applied to temperature controller, perform connection as
shown in [Figure 8.19]. After that, set communication type of temperature controller identical to the
communication type of Cnet I/F module in [Table 8.9] to complete basic setting for communication. Refer to the
user's manual of temperature controller to set temperature controller.
[Figure 8.19] 3-line connection between Cnet and temperature controller (Handshake-free)
Cnet(9-pin)
Pin No.
1
2
3
4
5
6
7
8
9
Setting contents
Mode '2' user defined mode
Basic value (Not used)
Null modem
38400 BPS / DATA 8 bits
/ START 1 bit / STOP 1 bit
Connection No. and signal direction
Name
CD
RXD
TXD
DTR
SG
DSR
RTS
CTS
RI
RS-422 channel not used.
Communication speed and basic
communication spec. shall be as
specified in spec. of temperature
controller communication.
8-37
Remark
Temperature controller
Pin No. Name
RXD 2
TXD 3
SG 7