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Function
Code
Function Code
(hexadecimal)
Description
22
0x16
mask write register
23
0x17
read write multiple registers
2.3
Message Frame Separation
Message frames shall be separated by a silent interval of at least 4 character
times.
2.4
Provided Data
Provided data includes measured values and alarm or state information of
the engine.
Measured values are digitized analogue values of sensors, which are stored
in a fixed register of the Control Module Small. Measured values include me-
dia values (pressures, temperatures) where, according to the rules of classifi-
cation, monitoring has to be done by the machinery alarm system. The data
type used is signed integer of size 16 bit. Measured values are scaled by a
constant factor in order to provide decimals of the measured.
Pre-alarms, shutdowns and state information from the SaCoS
one
system are
available as single bits in fixed registers. The data type used is unsigned of
size 16 bit. The corresponding bits of alarm or state information are set to the
binary value „1“, if the event is active.
2.4.1
Contents of List of Signals
For detailed information about the transferred data, please refer to the ”list of
signals“ of the engine’s documentation set. This list contains the following in-
formation:
Field
Description
Address
The address (e.g.: MW15488) is the software address used in the
Control Module Small.
HEX
The hexadecimal value (e.g.: 3C80) of the software address that has
to be used by the Modbus master when collecting the specific data.
Bit
Information of alarms, reduce load, shutdown, etc. are available as
single bits. Bits in each register are counted 0 to 15.
Meas. Point
The dedicated denomination of the measuring point or limit value as
listed in the „list of measuring and control devices“.
Description
A short description of the measuring point or limit value.
Unit
Information about how the value of the data has to be evaluated by
the Modbus master (e.g. „°C/100“ means: reading a data value of
„4156“ corresponds to 41,56 °C).
Origin
Name of the system where the specific sensor is connected to, or
the alarm is generated.
Signal range
The range of measured value.
2.4.2
Live Bit
In order to enable the alarm system to check whether the communication
with SaCoS is working, a live bit is provided in the list of signals. This Bit is al-
ternated every 4 seconds by SaCoS. Thus, if it remains unchanged for more
than 4 seconds, the communication is down.
Summary of Contents for L23/30DF
Page 1: ...L27 38S Project Guide Power Plant Four stroke GenSet...
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Page 9: ...MAN Diesel Turbo I 00 Introduction Page 1 1 I 00 Introduction 2018 04 13 en...
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Page 31: ...MAN Diesel Turbo D 10 General information Page 1 1 D 10 General information 2018 04 13 en...
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Page 59: ...MAN Diesel Turbo B 10 Basic diesel engine Page 1 1 B 10 Basic diesel engine 2018 04 13 en...
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Page 85: ...MAN Diesel Turbo B 11 Fuel oil system Page 1 1 B 11 Fuel oil system 2018 04 13 en...
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Page 173: ...MAN Diesel Turbo B 13 Cooling water system Page 1 1 B 13 Cooling water system 2018 04 13 en...
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Page 207: ...MAN Diesel Turbo B 14 Compressed air system Page 1 1 B 14 Compressed air system 2018 04 13 en...
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Page 217: ...MAN Diesel Turbo B 15 Combustion air system Page 1 1 B 15 Combustion air system 2018 04 13 en...
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Page 227: ...MAN Diesel Turbo B 16 Exhaust gas system Page 1 1 B 16 Exhaust gas system 2018 04 13 en...
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Page 269: ...MAN Diesel Turbo B 17 Speed control system Page 1 1 B 17 Speed control system 2018 04 13 en...
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Page 293: ...ENGINE AUTOMATION MAN Diesel Turbo SE SaCoSone GENSET System description Revision 1 5...
Page 306: ...MAN Diesel Turbo SaCoSone GENSET SaCoSone GENSET Communication from GenSet Revision 1 7...
Page 309: ...MAN Diesel Turbo Table of Contents...
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Page 327: ...MAN Diesel Turbo B 20 Foundation Page 1 1 B 20 Foundation 2018 04 13 en...
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Page 335: ...MAN Diesel Turbo B 21 Test running Page 1 1 B 21 Test running 2018 04 13 en...
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Page 341: ...MAN Diesel Turbo E 23 Spare parts Page 1 1 E 23 Spare parts 2018 04 13 en...
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Page 351: ...MAN Diesel Turbo P 24 Tools Page 1 1 P 24 Tools 2018 04 13 en...
Page 379: ...MAN Diesel Turbo B 50 Alternator Page 1 1 B 50 Alternator 2018 04 13 en...
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