Specifications
13
3.3.2 RS485
The RS485 port on the DSE9400 series battery chargers has two uses.
1) Supporting the DSE2541 remote battery charger display module (MKII only)
2) Support the Modbus RTU protocol for connection to a Modbus RTU Master device.
3.3.2.1
DSE2541 REMOTE BATTERY CHARGER DISPLAY MODULE
DSE2541 remote battery charger display modules
connects to the DSE9400 MKII Series battery
charger RS485 terminals.
This provides battery charger operating status, alarm
indication, instrumentation and control over the
DSE9400 MKII Series battery charger.
For further information please contact
[email protected].
3.3.2.2
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 (1.2km) when using Belden
9841 (or equivalent) cable. This allows for a large distance between the DSE9400 series 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 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).