Jumper Settings; Panel Power Select; Com 1/Com 2 Rs232/422/485 Select - DFI Qseven Q7A-551 User Manual

Jumper Settings

Panel Power Select

JP2
5 3 1
5 3
6 4 2
6 4 2
1-2 On: +12V 3-4 On:+5V_standby
JP2 is used to select the power supplied with the LCD panel.
Important:
Before powering-on the system, make sure that the power settings of JP2 match the
LCD panel's specification. Selecting the incorrect voltage will seriously damage the
LCD panel.
Chapter 2 Hardware Installation
5 3 1
1
6 4 2
5-6 On: +3V_standby
(default)
Chapter 2

COM 1/COM 2 RS232/422/485 Select

JP4 (for COM 1) and JP6 (for COM 2) are used to configure the COM ports to RS232, RS422
(Full Duplex) or RS485. The pin functions of COM ports will vary according to jumpers' setting.
JP4 (for COM 1)/ JP6 (for COM 2)
6 5
4
3
2
1
1-2 On: RS232
(default)
1 2 3 4 5
6 7 8 9
RS232
9
COM 1
JP4
JP6
COM 2:
RS232/422/485
COM 2
6 5 5
6
4
3 4
3
2
1 2
1
5-6 On: RS485
3-4 On: RS422
Full Duplex
COM 2
1 2 3 4 5
1 2 3 4 5
6 7 8 9
6 7 8 9
RS422
RS485
Full Duplex
COM 1:
RS232/422/485
9
2 1
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