Datakom D-500 MK2, User Manual

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D-500 MK2 User Manual Firmware V-6.3
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The unit is able to become the remote display and control panel of another identical module.
The connection between two modules is done through RS-485 ports. For the best results, a 120 ohms
balanced, low capacitance cable should be used.
The data rate between modules is selectable between 2400 and 115200 bauds.
A high data rate offers better synchronization between modules, but the distance will be limited.
Typically at 115200 bauds and with adequate cable, the distance will be 200m maximum.
At 9600 bauds and adequate cable the distance can go up to 1200m.
Below settings are necessary:
PARAMETER MAIN UNIT REMOTE DISPLAY UNIT
Annunciator Mode 0 1
RS-485 Enable 1 1
RS-485 Baud Rate any same as main unit
Modbus Slave Address any same as main unit
The remote display panel should be powered up
with an isolated voltage source, like a wall adapter.
Otherwise damages due to ground potential
differences may occur.
6.9. REMOTE DISPLAY UNIT FUNCTIONALITY
Control Unit
Remote
Display Unit