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RS-232 Connection
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 will require software
application (such as HyperTerminal) which allows the computer to send and receive control data that can
support the communication parameters described in this section.
Interface Parameters
These parameters are required to setup communications with the monitor.
Specification
RS-232C
Sync Method
Synchronous
Baud Rate
9600 bps
Parity
None
Character Length 8 Bits
Stop Bit
1 Bit
Command Format and Sequencing
Data Structure Overview
In order to transmit data from the computer to the monitor, the data must be sent in a structured format. The
format used by this monitor follows a COMMAND:DATA sequence. All commands and its related data are
formatted using a 3-character format separated by a colon in-between. For example, the Power On command
is sent as: PWR:PON where PWR is telling the monitor that it is receiving a Power related command, followed
by the actual command to carry out.
Communications Overview
As commands are sent from the PC,
the monitor will provide feedback
regarding the state of command
execution back to the PC. The monitor
provides information status to inform:
1. Whether the command sent by
the computer was received by
the monitor.
2. Whether the COMMAND:DATA
structure was correctly
formatted for execution by the
monitor.
3. Whether the command sent
was successfully carried out by
the monitor.
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RS-232C Pint Layout
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
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