Philips BDH4223V-27B - Manual (Page 28)

User Manual BDH4222V/BDH4223V
24
6.6 RS-232 REMOTE CONTROL CONNECTIONS
RS-232 Serial Terminal Overview
This monitor is equipped with an RS-232 serial terminal for using the
monitor with computer controls. The RS-232 serial terminal conforms
to the RS-232C interface specification. The computer requires a
software application (such as programming language software) which
allows the computer to send and receive control data that supports the
communications parameters listed below.
Communications Parameters
These parameters are required to setup communications with the
monitor.
Pin Layout for RS-232 Terminal
The RS-232C terminal pin layout are as follows:
Basic Format for Command Parameters
In order to transmit data from the computer to the monitor, the data
must be sent in 1-byte-hex format.
The command code (see page 25) must first be sent to the monitor,
followed by the desired value setting in hexadecimal format.
The steps below show an example of how the monitor input can be
changed to RGB:
1 Send 1-byte for command 91 (input select) to the monitor in hex
format 0x91.
2 Send 1-byte for the value of the RGB input. In this example, send
0x06.
3 The monitor will then respond back to the PC with a 1-byte value to
confirm the setting.
Notes:
● To connect a PC to the monitor's RS-232 port, you must use a
"straight-thru" RS-232 cable where pins 2 (RX) and 3 (TX) are not
reversed at one end.
● If there are no data to be sent, then the parameter signal does not
need to be sent.
Specification RS-232C
Sync Method Synchronous
Baud Rate 9600 bps
Parity None
Character Length 8 Bits
Stop Bit 1 Bits
Pin 1 Received Line Signal Detector (Data Carrier Detect)
Pin 2 Received Data (RXD)
Pin 3 Transmit Data (TXD)
Pin 4 Data Terminal Ready (DTR)
Pin 5 Signal Ground
Pin 6 Data Set Ready (DSR)
Pin 7 Request To Send (RTS)
Pin 8 Clear To Send (CTS)
Pin 9 Ring Indicator