Murphy EMS-GC10 - Communication System

Section 75 00-02-0878
2013-03-07 - 111 -
Communication System
All these protocols are based on a CANbus communication system. Except for the MDEC and
ADEC communication, all are based on the J1939. The MDEC and ADEC protocols are MTU-
designed protocols based on CANopen.
The Baud rate is fixed by the engine manufacturer at:
MDEC, ADEC
Caterpillar, Cummins, Detroit Diesel, Deutz, Iveco, John Deere, Perkins,
MTU J1939 Smart Connect, Scania and Volvo Penta
125 kb/s
250 kb/s
EIC Unit
The selection of the EIC unit (parameter 10970) determines whether bar/PSI and
Celsius/Fahrenheit is used. The selection affects display readings, values used for alarm
evaluation (parameter 76xx) and data readable by Modbus communication.
Common for all Alarm Functions
A number of alarms can be configured. The following items can be configured to an alarm:
Parameter
Alarm
Comment
7570
El comm. Error
Communication error
7580 EIC warning
Any alarm listed as warning for the selected engine
type in the section “Specific Engine Type
Descriptions”.
7590 EIC shutdown
Any alarm listed as shutdown for the selected
engine type in the section “Specific Engine Type
Descriptions”.
7600
EIC overspeed
Actual RPM
7610/7620
EIC coolant t. (2 levels)
Actual temperature
7630/7640
EIC oil press. (2 levels)
Actual pressure
7650/7660
EIC oil temp. (2 levels)
Actual temperature
7670/7680
EIC coolant level (2 levels)
Actual cooling water level
J1939 Measurement Table
This is the common J1939 measurement overview showing which measurements are
available. Note that not all measurements are supported by the individual engines; please refer
to the specific engine description.
The table below shows which values can be displayed in the view parameter that is in V1, V2
and V3.
The display values corresponding to the engine communication have a description beginning with
“EIC”.