User Manual

Command Reference
Elektronik-Systeme Lauer, MAEN976 135
6.76 LAU_STATUS_CFGWRITECOUNTER
(0x030E)
Configuration Write Counter
Lauer Navigation Monitors store their configuration data in a non-volatile memory
called EEPROM (Electrically Erasable Read Only Memory). An EEPROM has lim-
ited count of write/erase cycles (at least 100,000). This command returns the amount
of configuration writes, which may help to replace a device in time, if necessary. As
an example, if the device is configured 30 times each day (automatic and manual con-
figuration), the EEPROM is still capable to store new data for more than 9 years of
continuous operation (100,000 / 30 ≈ 3,333 days, 3,333 / 365 ≈ 9,1 years).
Supported since Firmware Version
MT223 NAV-230G: 1.2-C118
MT226 NAV-230G: 1.0-DSCALE2
Command Stream
Response Message (Acknowledge)
Response Message (Negative Acknowledge)
Under normal operation conditions, a device never sends a negative acknowledge in
response to this command.
Maximum Lr for this Command
12
Note:
Besides manual configuration, the device updates configuration data automatically
while in continuous operation, to store the operation hours (see command “ETC”) or
last backlight level value.
0 1 2 3 4 5 6 7...8 9
0x07 ADR
0x4C 0x41 0x55 0x02 ICHKH 0x03 0x0E ICHKD
0 1 2 3 4 5 6 7...10 11
0x06 ADR
0x4C 0x41 0x55 0x04 ICHKH Ret ICHKD
Ret
Value: Full 32-bit range
Type: Unsigned long
Length: 4
Description: Current number of write/erase cycles, where the first byte is
LSB