Bartec R3 Series Operating Instructions Manual page 44

Operation
40
ERR CHK1
ERR CHK2
Service register 8
Display S8
Minimum value 0
Maximum value 65535
Increment 1
Default value 0
Meaning Reserve
Service register 9
Display S9
Minimum value 0
Maximum value 65535
Increment 1
Default value 0
Meaning Checksum
Error messages
If any errors have occurred, they will be displayed once you have left the last
service register (S9). Pressing the mode button  takes you back to the
beginning of the menu (S0). If a checksum error has occurred, you can
make any necessary corrections in the service registers.
If an error is reported, you can only quit the sensor configuration by not
pressing any button for around 20 seconds or by switching off the unit.
The following messages may be output:
Incorrect checksum
EEPROM access incorrect
Operating Instructions Radiation sensors R3XX
Check the settings in the service registers and
change them as appropriate.
Please contact your service centre.