• From www.powertip.com.tw (probably newer one)
• From www.actron.de (probably older one)
Some LCDs may be connected without resistors:
DB25m Signal LCD Panel
18-25, GND Ground 1, 3, 4, 16
+5V Power 2, 15
Crystalfontz LCD Installation Notes
Before connecting the LCD, please check the availability of ports, their configuration, and free the
desired port resource, if required:
[admin@MikroTik] port> print
# NAME USED-BY BAUD-RATE
0 serial0 Serial Console 9600
1 serial1 9600
[admin@MikroTik] port>
The baud rate should be set to 9600 for use with the Crystalfontz serial LCD modules.
Portwell Installation Notes
The baud rate should be set to 2400 for Portwell LCD modules. The flow control should be set to
none. Make sure you use V2.9.44 or later of RouterOS. The wiring for the DB9 to 10-pin female
header cable is:
DB9 female 10-pin female header
2 2
3 3
5 5
Please note that the actual traces may not correspond to any of the documents coming from the
manufacturer. It seems that all pin numbers of J2 are printed on the silkscreen in a "mirrored" way.
Thus, the #1 pin is where the "5" is printed (the wiring above lists actual pin numbers, not the ones
printed on the board).
Configuring the LCD's Settings
Home menu level: /system lcd
Property Description
contrast ( integer : 0 ..255 ; default: 0 ) - contrast setting, sent to the LCD, if it supports contrast
regulations
enabled ( yes | no ; default: no ) - turns the LCD on or off
port ( name | parallel ; default: parallel ) - name of the port where the LCD is connected. May be
Page 573 of 695
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