LG GLOFA-GM Series User Manual page 61

Chapter 4 Performance specification
Connect interface cable linked as specified in 4.4.2.2 for pin connection, to RS-232C port of this module and DTE
connection terminal of the modem.
A) Connect the phone line to line terminal of modem.
B) Let modem and PLC powered on.
C) Run Frame Editor to set communication type of RS-232C channel to modem and input initializing
command.
[Note1]
Remark
[Note1] Each maker provides modem with various functions while communication control mode is to be set by
user. Mode setting of modem operation shall be set by initializing command of modem like this, and the
operation modes between 2 modems to use shall be set surely identical. The basic value of initializing
command is 'ATZ'. And since the initializing command differs according to modems, AT command
specified in user's manual for modem shall be input.
2) Set transmission specification of communication speed, data and stop bit in basic parameter items.
Remark
[Note1] Beware of the following items when setting basic parameters.
1) Communication speed and setting values of data and stop bit in setting items of basic parameters are the
transmission specification not between modem and modem but between DTE(Cnet I/F module) and
DCE(modem).
2) Set basic parameters to basic values and communication speed to max. speed of modem
3) If modem is used supporting communication speed of more than 56kbps, set communication speed of
Cnet I/F module to 38400bps as of max. speed.
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[Note1]