InteliDrive DCU Marine - 3.0.0 Global Guide
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4.2 Recommended wiring
4.2.1 Bus/Communication architecture
RS232
One of following possibilities is available:
PC software interface (DriveConfig, InteliMonitor).
Modbus protocol option for SCADA systems.
Analog or GSM Modem interface.
IG-IB – internet interface.
CAN1 / J1939 / KWP2000
CAN1 is data line for controller Inputs/Outputs extension. It is possible to connect following extension modules:
ECU (Engine Control Unit),
IGS-PTM (8 BI, 8BO, 4AI, 1AO),
IS-AIN8 (8AI),
IS-AIN8TC (8AI – TC only),
IS-BIN 16/8 (16BI, 8BO),
Inteli IO8/8 (8 or 16 BI, 8 or 0 BO, 2AO).
Full physical CAN interface on ID-DCU MARINE is available, no ID-COM interface needed. Maximal CAN bus
length is up to 200m
CAN2
Inter-controller CAN for multiple engines applications. ID-COM module is necessary. It is possible to connect
ID-DCU MARINE controllers and/or
IG-MU (Direct cable, analog modem or GSM modem interface) and/or
IG-IB (Internet interface) and/or
IB-NT and/or
The data rate is selectable in two levels: 250 kBd for 200 meters line and 50 kBd for 900 meters line.
CAN bus Connection rules
CAN bus line must be connected in series, from one unit to the next (no star, no cable stubs, no branches) both
ends must by the 120 Ω (internal or external) resistor terminated.
Maximal CAN2 bus length is up to 200 meters when Basic settings: CAN bus mode = 250 kBd or up to 900
meters when Basic settings: CAN bus mode = 50 kBd.
For CAN data cables details see chapter Technical data – Communication interface. CAN cable shielding
connect to ID-DCU MARINE case.
ID-DCU MARINE contains internal 120 Ω resistor over jumper setting on CAN1 bus. Use D SUB9 male
connector: CAN H = 5, CAN L = 9, COMMON = 3 and 8.
IGS-PTM unit contains internal jumper-removable 120 Ω resistor. To be sure check resistor presence by
ohmmeter. Unit with internal resistor should be connected to the end of CAN2 line.
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