Extended Operating Hour Counters Via Modbus - Man L23/30DF Project Manual

4 Extended operating hour counters via MODBUS

Register addresses
Data type
8
The operating hour counter and the overload hour counter are available via
the Modbus Interface. The maximum range was extended to 1,193,046
hours in CM-Software version 1.2.1.
At the Modbus register addresses MW124 and MW125 the existing operat-
ing hour counters are still available to ensure compatibility. These operating
hour counters are showing up to 65,535 hours.
The new register addresses for the extended operating hour counter:
Low word: MW 130
High word: MW 131
The new register addresses for the extended overload hour counter:
Low word: MW 132
High word: MW 133
The data type used at these registers is unsigned integer of size 16 bit.
To use the extended operating hour counter, connected systems must con-
catenate two Modbus register addresses in the following way:
MW 130 LW
MW 131 HW
OpHour [h] = ((
This procedure is also applicable for the overload hour counter:
MW 132 LW
MW 133 HW
OverloadHour [h] = ((
MAN Diesel & Turbo
HW x 65536) + LW
HW x 65536) +
) / 3600
LW ) / 3600