Control functions
RS-232C
You can control the LCD Display from an external service via RS-232C. The RS-232C connection
is briefly explained in this page.
Interface
Establish the RS-232C connection to the LCD Display by using a 3.5 mm stereo mini plug.
3.5 mm Stereo mini plug
TIP
RING
SLEEVE
Connection settings
When establishing the RS-232C connection, make connection settings as below.
Baud rate
Data
Parity
Start bit
Stop bit
Flow control
Data format
We introduce the data format for the RS-232C communication below.
(a) Requests from the controller to the LCD Display
No.
Item
1
Header
2
Category
3
Function
4
Length
5
Data 1
:
:
:
:
X+4
Data X
X+5
Check Sum
14
US
TXD
RXD
GND
1 2 3 4
5
6 7 8 9
9600 bps
8 bit
None
1 bit
1 bit
None
Value
0x8C
: Control
0x00
(fixed)
0xXX
0xXX
(=Data X+1 byte)
0xXX
0xXX
0xXX
0xXX
0xXX
TIP: LCD Display t Controller
RING: Controller t LCD Display