LG GLOFA-GM Series User Manual page 347

Programmable logic controller cnet i/f module
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Appendix
② LED for transmission specifications indication (with display switch pushed twice)
If LED display switch is released and pushed again after pushed once, transmission specifications are
displayed on LED. At this time, because No. 15 LED becomes 'Off', user can know that it is indicating
transmission specifications. Transmission specifications are separately indicated according to RS-232C
channel and RS-422 channel as below table.
LED No.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Transmission speed is converted from 3-Bit values of d0 ~ d2 to HEX, of which value is shown as below table.
(see below table.) But, 76800 bps is provided in RS-422, and is available in Ver. 1.3 or later version of Cnet I/F
module.
LED value
0
1
2
3
4
5
6
7
Bit value
d0
Communication speed of
RS-232C channel
d1
(300~38400 bps)
d2
Data Bit
Parity Being/None
-
Even/Odd Parity
Stop Bit
Not used
'Off' during transmission specifications indication
d0
Communication speed of
d1
RS-422 channel
( 300 ~ 76800 bps)
d2
Data Bit
Parity Being/None
-
Even/Odd Parity
Stop Bit
-
'Off' during transmission specifications indication
LED lighting indication
All Off
d0
d1
d0,d1
d2
d0,d2
d1,d2
d0,d1,d2
Indication contents
RS-232C/RS-422 channel
300, 76800 bps
600 bps
1200 bps
2400 bps
4800 bps
9600 bps
19200 bps
38400 bps
A-4
Remark
Binary value
[Note1]
On : 8Bit / Off : 7Bit
On : Being / Off : None
On : Even / Off : Odd
On : 2Bit / Off : 1Bit
Binary value
On : 8Bit / Off : 7Bit
On : Being / Off : None
On : Even / Off : Odd
On : 2Bit / Off : 1Bit

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