Hitachi ZW180 Technical Manual page 44

MC, ECM and Monitor Unit are used for various op-
eration controls of the body.
•
The analog input signals from the sensors and
switches attached to devices other than the engine
and monitor unit as well as the analog output signals
from the solenoid valves are transmitted to MC, and
converted into the digital signals to be uploaded on
CAN.
•
The analog input signals from the sensors attached
to the engine are transmitted to ECM, and converted
into the digital signals to be uploaded on CAN.
•
The analog input signals from the cab, and the
analog input signals from the sensors and switches
necessary for indication of the monitor are trans-
mitted to the monitor unit, and converted into the
digital signals to be uploaded on CAN.
Each controller detects lacking information necessary
for the control program from the CAN data. (digital
signals)
Each controller makes various control program arith-
metic operations by using the detected data (digital
signals), outputs the actuation signals to the solenoid
valves unit and torque control solenoid valve, and
controls the pump, engine, transmission and valves.
The analog signals from various sensors, switches
and solenoid valves are periodically transmitted to
each controller, and converted into the digital signals
to be uploaded on CAN.
By repeating the above operations, the vehicle body
movement is watched and controlled.
SYSTEM / Control System
T2-1-2