Winco DSE7300 Series - Manual (Page 16)

DSE Model 7000 Series Control and Instrumentation System Operators Manual
16 Part No. 057-074 7000 Series OPERATING MANUAL ISSUE 5 15/10/2009 ADM
3.10.4 RS485
NOTE:- RS485 capability is not available with DSE7200 series controllers.
The RS485 port on the DSE7300 series controller support the Modbus RTU protocol.
The DSE Gencomm register table for the controller is available upon request from the DSE Technical Support
Department.
RS485 is used for point to point cable connection of more than one device (maximum 32 devices) and allows for
connection to PCs, PLCs and Building Management Systems (to name just a few devices).
One advantage of the RS485 interface is the large distance specification (1.2km when using Belden 9841 (or
equivalent) cable. This allows for a large distance between the DSE7000 series module and a PC running the DSE
Configuration Suite software. The operator is then able to control the module, starting or stopping the generator,
selecting operating modes, etc.
The various operating parameters (such as output volts, oil pressure, etc.) of the remote generator can be viewed
or changed.
NOTE:- For distances up to 6m (8yds) the USB connection method is more suitable and provides for a
lower cost alternative to RS485 (which is more suited to longer distance connections).
Recommended PC Serial Port add-ons (for computers without internal RS485 port) :
•
Brainboxes PM154 PCMCIA RS485 card (for laptops)
Set to ‘Half Duplex, Autogating” with ‘CTS True’ set to ‘enabled’
•
Brainboxes UC320 PCI Velocity RS485 card (for desktop PCs)
Set to ‘Half Duplex, Autogating” with ‘CTS True’ set to ‘enabled’