Xylem 795 MJK Data Transmitter - Manual (Page 51)

51 M795GB0503
Data Transmitter 795
SW ver. 830434
B Appendix
B1 Maintenance
In case the function 'Alarm call at power failure' is
acticvated, it is recommended to exchange the
built-in accumulator yearly. Beyond this, MJK
Data Transmitter 795 require no particular
maintenance.
Check the accumulator by disconnecting the
power and check if the Data Transmitter is able to
perform a dialup sequence in order to transmit a
power failure alarm.
When the power is disconnected, the display
backlight will disappear immediately.
If 'Alarm call at power failure' is deacticvated, the
display will be turned off completely after 20 - 40
sec. If 'Alarm call at power failure' is acticvated,
the Data Transmitteren will start to dial the phone
numbers in the telephone list in a period of max. 5
minutes, and then the Data Transmitter will shut
down.
B2 Service codes
Data Transmitter 795 are equipped with functions
that should not be operated by the end user.
Always contact MJK Hotline before the ser-
vice codes are used!
B2.1 Universal access code
If the access code is unavailable, the acces code
1 1 1 1 can always be used.
B2.2 Forced setup without reset of datalogger
If this code is used, the user will be forced to go
through all settings. The logged data will not be
erased.
Enter F 0 followed by 1 2 3 4.
B2.3 Forced setup including reset of
datalogger
If this code is used, the user will be forced to go
through all settings. All logdata will also be
erased!
Enter F 0 followed by 4 3 2 1.
B2.4 Baud rate and communication method
This code give access to menus for setting the
baud rate for the serial port and to select
communication method (GSM/GPRS/Pager/
internal modem etc.).
Enter F * followed by 2 0 4 5.
B2.5 Activation of SIM card for GSM/GPRS
modem
Enter F # followed by * * 0 5 *.
See also separate documentation for GSM/GPRS
option.
B2.6 Total reset
This code give access to a TOTAL RESET.
Enter F 0 and 2 0 4 5.
B3 Software upgrade
The software is stored in EPROM, that just need
to be exchanged for upgrading.
When the EPROM is exchanged, all basic
settings and all logdata will be preserved, if the
old software are version 800400 and onwards. All
basic settings and logdata will be lost when
upgrading software versions before 800400.
1: Read first the instruction that came with the
new EPROM.
2: Disable the function 'Alarm call at power
failure'. See section 6.8.
3: Disconnect the power supply to the Data
Transmitteren.
4: Remove the front panel by unscrewing the 4
retaining screws in each corner and flip it out
of the cabinet. Note: DO NOT withdraw the
flat cable to the lower PCB!
5: Remove the old EPROM.
Mount the new EPROM in the socket marked
'IC4' (see illustration above). Make sure the
EPROM is mounted in the correct orientation!
6: Reassemble the front and connect the power
source to the Data Transmitter.
7: All basic setting must be confirmed.
It is very important that the hardware setup
settings are correct!
Data Transmitter 795 is now ready for operation.
Appendix
Note the notch in
the EPROM!