Print Facility; Connecting To The Pdu; Rs232 Protocol; Printer Configuration - Aston Martin DB7 Workshop Manual

^ ^
The Aston Martin Lagonda Diagnostic System
Users Guide
Print Facility
The print trace and print screen facilities provided on
DB7 CD2 will enable the Dealer to print directly to a
serial printer via an isolated RS 232 cable.
General Information
This cable isdesigned to provide full electrical isolation
between the Portable Diagnostic Unit (PDU) and a
device using the RS232 serial communication port.
The cable is constructed with an in-line module that
contains the optical isolation circuitry, powered from
the PDU.
Printer type
The cable is supplied configured to suite an Epson
LX300 printer. This is the only instal lation verified and
approved by Aston Martin Lagonda Ltd.
Unexpected results may occur if used with an
unapproved printer.
Part Number Equipment type
3539-1114-03 Epson LX300 printer cable kit
comprising
3539-1169-03 Printer Cable
3539-1175-02 User Self Test Adaptor
Connecting to the P D U
Connection to the PDU RS232 port is made by plugging
the circular connector with the BLUE ident ring into
socket (1) on the PDU interface panel.
RS232 Protocol
The RS232 protocol operated by the PDU is 9600
baud, 8 bit, no parity, 1 stop bit, RTS / CTS hardware
handshake.
Printer Configuration
When connected to the printer a hardcopy of the PDU
data can be produced.
25 W a y
Connector
c r p '*=\
Isolator • — * «
RS232 Cable
Printer Connection
Printer
When connecting to the printer please record original
printer settings prior to making any changes. Neither
CenRad nor Aston Martin Lagonda can accept
responsibility for re-configuration of the printer for
other applications.
Self Test Adaptor
Each cable type is supplied with a User Self Test (UST)
adaptor. This allows the function of the cable to be
verified independently of a printer. Future releases of
UST software will include testing procedures for this
cable.
RS232 Printer Cable
September 1996 9-49