2.
Configuration Guide
2.1.
Power
Note: The standard configuration is for 5V power input and 3.3V panel power. For other
configurations, please contact Reach.
2.2.
Serial
The SLCD+ has four serial ports. Any can be used to send commands to the board. The
ports and their characteristics are as follows:
Port Description
COM0
Typically RS-232; remove a resistor for 3.3V CMOS logic level
COM1
3.3V CMOS logic only. Control signal (RTS) for RS485 driver enable
COM2 RS232
only
COM4
3.3V or 5V logic level I/O (on-board voltage translator)
COM0 is primarily used for RS232 communication, while COM1 supports 3.3V CMOS
level signaling with RTS handshaking for an external transceiver such as RS485.
By default, serial communications is 115200 baud, 8 data bits, no parity, with 1 stop bit,
with receive flow control via XON / XOFF. This can be changed by using a “power-on
macro” which is described in the companion manual
SLCDx Software Reference
.
2.3.
TFT Panel Orientation
The SLCD+ can support QVGA TFT panels with standard 33 pin flat flex pinouts. Some
panels also have signals for display orientation, called Right/Left and Up/Down. These
signals are controlled via the firmware using the “*orient” command. Refer to the
SLCDx
Software Reference
.
2.4.
Grounding
In order for the touch screen to work properly with a panel that has a CCFL backlight, the
panel metal frame must be grounded to the SLCD+ ground. All SLCD+ mounting holes are
connected to SLCD+ ground.
SLCD+ Controller Manual V1.1
8/14/2009
Page 11
