Datakom D-100 MK2, User Manual

Page: 23 / 123

D-100 MK2 User Manual Firmware V-6.3
K96D01-EN - 23 -
Structure:
RS-485, isolated.
Connection:
3 wires (A-B-GND). Half duplex.
Baud rate:
2400-38400 bauds, selectable
Data type:
8 bit data, no parity, 1 bit stop
Termination:
External 120 ohms required
Isolation:
250VAC, 1 minute
Common mode voltage:
-0.5 VDC to +7VDC, internally clamped by transient suppressors.
Max distance:
1200m @ 9600 bauds (with 120 ohms balanced cable)
The RS-485 port features MODBUS-RTU protocol. Multiple modules (up to 128) can be paralleled on the
same RS-485 bus for data transfer to automation or building management systems.
The RS-485 port provides also a good solution for distant PC connection where RainbowPlus program
will enable programming, control and monitoring.
For more details about programming, control and
monitoring through RS-485 port please refer to
RainbowPlus user manual.
The Modbus register list is available at Datakom
technical support.
3.12. RS-485 PORT (PLUG-IN MODULE)
3.11. -
RS-485 Slot