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6 Connection of Analytical Balances and Printers
6.1
Connection of Analytical Balances
As it often happens that the sample is weighed in on an analytical balance, it makes sense to connect
this balance to the TitroLine
®
5000. To connect the balance to the TitroLine
®
5000, the balance must
have a RS-232-C-interface and the connection cable must be configured accordingly. For the following
types of balances there are already assembled connection cables:
Balance
TZ-Number
Sartorius (all types), partially Kern,
TZ 3092
Mettler, AB-S, AG, PG
TZ 3099
New Sartorius with USB-interfacee via RS-Adapter
TZ 3099
Precisa XT-Series
TZ 3183
Kern with 9-pole RS232
TZ 3180
For all other types of balances it is possible to obtain an already assembled connection cable (on
demand). For this we need detailed information about the RS-232-C-interface of the balance used.
The connection cable is to be connected to the RS-232-C-interface 2 of the TitroLine
®
5000. This side
of the connection cables always consists of a 4-pole mini-plug. The other side of the cable can,
depending on the type of balance, be a 25-pole plug (Sartorius), or a 9-pole plug (Mettler AB-S) etc.
In order to allow the balance data to be sent to the TitroLine
®
5000, the data transmission parameters
of the titrator and the balance must correspond to each other. Additionally, it is necessary to carry out
some more standard settings on the side of the balances:
The balance is to send the balance data via RS-232-C only by means of a print command.
The balance is to send the balance data only after the display standstill.
T
he balance should never be set to ‘automatic sending’ and/or ‘send continuously’.
‘Handshake’ on the balance must be set to ‘off’, or even ‘Software Handshake’ or ‘Pause’.
No special characters such as
S
or
St
are allowed to be used as prefix in the balance data of the
balance data string. In such a case it might be possible that the TitroLine® 5000 cannot process
the balance data correctly.
After you have connected the balance with the appropriate cable to the TitroLine
®
5000 and have
adjusted all settings in the balance software, and possibly in the TitroLine
®
5000, you can now test the
data transfer of the balance very easily. Start the one method. Confirm the sample designation. Then,
the display asks you:
a) To press the print-button at the balance
Para
meters to ‘weighted sample automatically’
b) To enter the weighted sample
then the parameters are still set to ‘weighted sample manually’
Put an object onto the balance and press the print button. After the standstill of the balance display
there will be beep at the TitroLine
®
5000 and the transmitted balance data appear:
a) After approx. 5 sec. in the display and the display changes automatically into the measuring
display.
b) The weighted sample must again be confirmed with <Enter> or <F1>.
6.2 Balance data editor
Pressing the die
<F5/balance symbol >
function key on the optional external keyboard will invoke the
so-called balance data editor.
A list with the existing balance data will appear:
