LG GLOFA-GM Series User Manual page 346

Appendix
2) Station No./transmission specifications indication (when LED display switch pushed)
Station No. and transmission specifications are indicated through the LED on the top of module by On/Off of LED
display switch in the front of computer link module. When switch first pushed, station No. is displayed, and when
the switch pushed again after switch release, transmission specifications is displayed. According to this sequence,
station No. and transmission specifications are repeatedly displayed in sequence whenever the switch pushed by
once. For distinguishing LED indications of station No. and transmission specifications, No '15' LED is used.
When indicating station No., No.'15' LED becomes On, when indicating transmission specifications, it becomes
Off, and the remaining LED indicates transmission specifications.
① LED for station No. indication (with display switch pushed once)
If LED display switch is pushed once, No.'15' LED becomes On as below table, LEDs of No. 0~4 indicate the
station No. for RS-232C channel and LEDs of No. 8~12 indicate the station No. for RS-422 channel in binary
value.
LED No.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Remark
Note1] Example of station No. calculation
[
Station No. calculation if LEDs of No.D0, D1, D4D are ON : 2
Station No. calculation if LEDs of No.D1, D3 are ON : 2
[Note2] Function of station No. indication isn't supported separately for GM7.
Bit value Indication contents
d0
d1
Range (0~31) of RS-232C
channel station No. indication
d2
d3
d4
Not used
Off during station No. indication
Not used
Not used
d0
d1
Range (0 ~31) of RS-422
d2
channel station No. indication
d3
d4
Not used
Off during station No. indication
Not used
On during station No. indication
+2 +2
0 1
+2 =2+8=10
1 3
A-3
Remark
Station No. can be recognized by
converting binary to HEXdecimal
value
.
[Note1]
Station No. can be recognized by
converting binary to HEXdecimal
value
.
[Note1]
=1+2+16=19
4