WÄRTSILÄ VASA 6L32, Instruction Manual

Page: 392 / 394

23.10 Error Codes
Whenever a measurement value is missing the data item status
is set to OLD_VALUE. If the data item has never been updated,
the status is set to DEFAULT_VALUE. In both cases an error
code is updated to the data item. The error code is calculated
according to the formula -(900 + value of the data item).
Measurement fail error codes of the SMU
Table 23-8
Error code Explanation
-901 Power error
-902 AD error
-903 Shift register error
-904 Connection error
-905 Sensor short error
-906 Sensor break error
-908 Temperature reference error
-909 Overflow error
-910 Underflow error
-911 EE error
-912 Hardware error or no measurements done yet
Communication fail error codes of the SMU
Table 23-9
Error code Explanation
-1000 Timeout before reply received
-1001 Checksum error in the received message
-1002 STX not found in the start frame or data length is zero
-1003 Data field is too wide
-1004 Measured value out of measurement range
-1005 The result is not a floating point number
-1006 The difference between two consecutive
measurements is too big
-1007 Failed to initialize SMU
The sensor values may be multiplied in the MCU with 10 or 100
for the Modbus communication. In the external system the values
are accordingly divided with 1/10 or 1/100. In the case of error
code value the sensor code is not multiplied in the MCU. If the
external system anyway divides the error code value it may differ
from the value shown in tables above by one or two decade (e.g.
MCU error code -906 may be -90.6 in the external system).
23 Instrumentation and Automation 32-200115/II
23-58 WÄRTSILÄ 32