DSE Model 7000 Series Control and Instrumentation System Operators Manual
12
Part No. 057-074 7000 Series OPERATING MANUAL ISSUE 2 02/05/2008 ADM
3.7 COMMUNICATION PORTS
USB Port USB2.0 Device for connection to PC running DSE configuration suite only
Max distance 6m (20 feet)
Serial Communication
(not available on
DSE7200 series)
RS232 and RS485 are fitted but do NOT provide independent operation
RS232 Port
(not available on
DSE7200 series)
Non – Isolated port
Max Baud rate 115K baud subject to S/W
TX, RX, RTS, CTS, DSR, DTR, DCD
Male 9 way D type connector
Max distance 15m (50 feet)
RS485 Serial
(not available on
DSE7200 series)
Isolated
Data connection 2 wire + common
Half Duplex
Data direction control for Transmit (by s/w protocol)
Max Baud Rate 19200
External termination required (120R)
Max common mode offset 70V (on board protection transorb)
Max distance 1.2km (¾ mile)
CAN Port Engine CAN Port
Standard implementation of ‘Slow mode’, up to 250K bits/s
Non Isolated.
Internal Termination provided (120Ω)
Max distance 40m (133 feet)
3.8 DSENET®
DSENet® is the interconnection cable between the host controller and the expansion module(s) and must not be
connect to any device other than DSE equipment designed for connection to the DSENet®
NOTE : DSENet® is not available on DSE7200 series controllers.
Cable type Two core screened twisted pair
Cable characteristic impedance
120Ω
Recommended cable Belden 9841
Belden 9271
Maximum cable length 1200m (¾ mile) when using Belden 9841 or direct equivalent.
600m (666 yds) when using Belden 9271 or direct equivalent.
DSENet® topology Bus with no stubs (spurs)
DSENet® termination
120Ω. Fitted internally to host controller. Must be fitted externally to the ‘last’
expansion module by the customer .
Maximum expansion modules Refer to host controller documentation
NOTE : As a termination resistor is internally fitted to the host controller, the host controller must be
the ‘first’ unit on the DSENet®. A termination resistor MUST be fitted to the ‘last’ unit on the DSENet®. For
connection details, you are referred to the section entitled ‘typical wiring diagram’ elsewhere in this
document.
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