DSE DSE9474, Руководство оператора

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Specifications
057-231 ISSUE: 2 Page 14 of 30
2.6.2 RS485
The RS485 port on the DSE9474 & DSE9484 series battery chargers have two uses.
1) Supporting the DSE2541 remote battery charger display module.
2) Supports the Modbus RTU protocol for connection to a Modbus RTU Master device.
2.6.2.1 DSE2541 REMOTE BATTERY CHARGER DISPLAY
DSE2541 remote battery charger display modules
connects to the DSE9474 or DSE9484 battery
charger RS485 terminals.
This provides battery charger operating status, alarm
indication, instrumentation and control over the
battery charger.
For further information contact
sales@deepseaplc.com.
2.6.2.2 MODBUS RTU
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).
Using the DSE Configuration Suite PC Software, Configurable Gencomm is used to map
instrumentation to modbus registers.
One advantage of the RS485 interface is the large distance specification (1.2 km) when using Belden
9841 (or equivalent) cable. This allows for a large distance between the battery charger and a PC
running the DSE Configuration Suite software.
The operator is then able to view the various operating
parameters.
NOTE: For distances up to 6 m (8 yds) the USB connection method is more suitable and
provides for a lower cost alternative to RS485 (which is more suited to longer distance
connections).