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Remote, RS 232 interface, data backup
General
Data backup should be performed phor to new installations and programming modifications of the DMM 4650. This
ensures that replacing an appliance for service purposes takes the least effort, immediately providing identical functions
on the replacement unit. When setting-up systems with similar functions more often, the programming data can be
copied using a ready-made data carrier.
For data backup a PC with serial interface and a terminal program is necessary. Please note that the guidelines of the
manufacturer of data media (disks, tapes etc.) are to be observed for maximum data safety, since they guarantee data
integrity for a limited period of time only.
Using a medium transfer baud rate, the backup of a device status including its gong, alarm, sequences and trigger
(”backup”) presets lasts about 1 0 seconds. If the audio data of the message memory(”backup message”) is supposed
to be saved additionally, the duration depends on the length of the recorded messages and can last several minutes
(short message) up to some hours (memory completely used). Thus, it is recommended to perform an audio data
backup via the menu ”message edit Play all” onto a DAT recorder or tape deck.
Connection REMOTEIRS 232
Interface
settings
Baud rate
300 to 38400
The baud rate can be set at the DMM 4650 (”System setup > RS232”),
Data bits
8
as well as via the interface with command (see list REMOTE commands).
Parity
none
After pressing the Return key on the PC (Line Feed), the unit returns
Stop bit
1
”DMM 4650” (communication test).
Protocol
Xon/Xoff
The baud rate is factory preset to 9600 baud.
Backup, Restore commands, Priority
The ”backup” command can be given both, from the DMM 4650 menu ”System setup > backup”, as well as via the
REMOTE interface. After starting the backup procedure, the desired data is transmitted in the previously determined
format via the REMOTE interface. The PC’s terminal program receives the data
and creates a corresponding
file. The terminal program’s configuration is not to be set for any conversion
of the received data.
Part of backup file:
RESTORE is needed for data re-storing, AOO = alarm preset 00, G=gong,
RESTORE AOO: data
S=sequences, s=stop trigger, TA.1 =trigger PortA lnputl, M=message and
RESTORE GOO: data
U=basic settings. This text file can be altered using an editor, e.g. by altering
RESTORE s20: data
AOO into A05 or deleting whole presets including all data belonging to them.
RESTORE TA.1:
:Data consist of the character string which belongs to the preset and which
RESTORE U: data
may not be altered. (! word processor software like WORD or Word Pad should not
beused to perform the described alterations, since they add they own format strings to
the text.
