Datakom D-500 MK2 - Datalink and Analog Load Share; Datalink-CANBUS Port Details

D-500 MK2 User Manual Firmware V-6.3
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Structure:
CANBUS, isolated.
Connection:
4 wires (DATALINK-H, DATALINK-L, GND, TERMINATION).
Data rate:
250 kbps standard (adjustable between 50 and 500 kbps)
Termination:
120 ohms resistor internally connected to DATALINK-H.
The TERMINATION is to be connected to DATALINK-L in order to
terminate the Datalink bus.
Isolation voltage:
1000 VAC, 1 minute
Common mode voltage:
-0.5 VDC to +15 VDC, internally clamped by transient suppressors.
Max distance:
200m with 120 ohm balanced cable
Figure illustrating the Datalink termination from two ends
The Datalink cable shield should be grounded from
one end only.
The Datalink bus should be terminated from both
ends.
4.2.3. DATALINK-CANBUS PORT
Termination
Termination