Chapter 2 Installation
EC7-1818CLD2NA
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3.
JP7 ~ JP9: RS-232/RS-422/RS-485 Mode Selection for COM3 (Pitch:
2.0mm)
COM3 supports the operating modes of RS-232/RS-422/RS-485, which can be set by JP7
~ JP9.
Mode Selection
Pin
Setting
RS-232
(Default)
RS-422
RS-485
JP7 1-2 5-6
3-4
JP8 1-3 3-5
3-5
JP8 2-4 4-6
4-6
JP9 1-3 3-5
3-5
JP7 ~ JP9
JP9 2-4 4-6
4-6
4.
Optional Connector, Pin9 of COM4/5 supports RI#/5V/12V. Please set as
follows:
Function Selection for Pin9 of
COM4/5
Setting
RI#(Default)
5V
12V
JP12 1-2 3-4
5-6
JP12
JP13
JP13 1-2 3-4
5-6
5.
JLCD1: Select LCD Operating Voltage (Pitch: 2.0mm)
Different LCD screens have different voltages; the board provides two voltage
options, 3.3V and 5V. Only when the selected LCD voltage is in accord with the LCD
screen operating voltage in use, can the LCD screen operate normally. Please set as
follows: