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Communication
The information from sensors and switches connected to the
DCU 305 R3 can be remotely monitored by utilising the built-in
communication channel.
Any common supervision systems like Factory Link®, InTouch®, etc.
that supports the Comli or Modbus protocol can be used.
The DCU 305 R3 supports the CAN J1939 standard for interface between
Engine ECM and DCU 305.
When connected, all data available on the DCU 305 R3 display is
available in the supervision system. In addition, commands such as Start,
Stop and Acknowledge can be done.
Protocol and pin-configuration
The DCU 305 R3 has the Comli and modbus communication protocol
built-in. It communicates at 9600 baud on its RS232 communication
port, P3.
In order to communicate, the control units ID-number must be known.
This ID-number may be any number in the range 1-239. The printout
documentation from Rudolf includes the ID-number. The ID-number is
also displayed in the info view.
The document DCU 305 R3 Communication Manual includes the
complete list of available signals and their address. Please refer to this
document when communicating towards the control panel.
In addition the DCU 305 R3 has the J1939 CAN-bus communication
protocol built-in. On the DCU 305 R3 port P10 is dedicated to CAN
communication. For further description, please see installation manual
for DCU 305 R3.
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