18
Electromagnetic Flowmeter Converter
5.1.1 Data Entry Information
Special programming knowledge is not required for entering
data.
Settings and data can only be entered or changed when the
converter program protection has been turned off. Whenever
the power is turned on the program protection is automatically
turned on, i.e., no settings or values can be changed. If an
attempt is made to make changes while the program protection
is turned on, the following message is displayed:
Operating parameters can be accessed by pressing the
appropriate direct access key or by using the arrow keys to
scroll in either direction through the menu. The name of the
parameter is displayed in the first line and its present value in
the second line together with its units.
The converter remains on-line during data entry, i.e., the current
and pulse outputs continue to indicated the present operating
conditions. Any control devices connected to the converter
need not be set to manual when parameters are viewed or
changed. No data is lost in the internal and external pulse
totalizers.
5.1.2 Direct Numeric Entries
Use the arrow keys to access the program protection and select
Off
with
ENTER.
Parameters can only be changed when the program protection
is turned off. Data is entered using the following procedure:
1. Access the desired parameter by pressing the appropriate
key. The parameter is displayed in the 1st line and its value
in the 2nd line.
2. When the
ENTER
key is pressed the text displayed in
the 1st line remains unchanged while the parameter value
in the 2nd line is cleared and replaced by a blinking cursor.
The converter waits for data to be entered. If no data is
entered within approx. 20 seconds the old value is
redisplayed and after an additional period of time the
process information display reappears.
3. The data is entered beginning with the most significant
number. The new value is accepted and stored in the computer
when the
ENTER key is pressed. As a check, the new
value is displayed. If an incorrect entry has been made it can be
cleared by pressing the
C/CE key. To immediately return to
the process information display press the
C/C E
key,
otherwise the display returns automatically after approx. 20
seconds.
3.1 The computer checks the data entered after the
ENTER
key is pressed. If the data value is outside of
the allowable setting range an error meessage is displayed
and the old data is retained. The message can be cleared
and the old value redisplayed by pressing the
C/C E
or
ENTER
key. The value can be cleared as described
above.
5.1.3 Entries from a Table
After initiating the procedure with
ENTE
R
the arrow keys
can be used to find the desired value in the table. When the
value is found it can be accepted by pressing the
ENTE R
key. The value is checked for plausibility. The routine can be
interrupted at any time by pressing the
C/ CE
key.
5.1.4 Terminating Data Entry
The entry is cleared by pressing the
C/C E
key. Pressing
the C/CE
key
again displays the value of the old setting
and pressing the
C/C E
key once more redisplays the
process information.
After data entry has been completed the program protection
should be turn on. Find the parameter “Program protection”.
Press the
ENTER key.
The program protection is turned on.
5.1.5 Data Security
All data is stored when the power is turned off or interrupted in
a NV-RAM. The parameter settings, process information and
flowmeter primary specific calibration data are stored in a serial
EEPROM as well as in an external EEPROM. If a converter
module exchange is necessary it is possible to upload all the
data from the external EEPROM into the new converter
module.
5.1.6 Double Function Keys F1–F4
The keys F1–F4 can be configured as double function keys and
assigned a parameter selected by the user. Select the
parameter to be assigned using the arrow keys and then press
and hold the F1 key for at least 5 seconds. The F2 - F4 keys
can be programmed similarly.
The parameters assigned to the double function keys F1 - F4
can be recorded on Page 53.
The user selected parameter for the double function are
assigned by pressing the
ENTE R
key.
* Error *
* Prog. Prot. *
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F1 store?
yes ENTER
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Содержание 50SM1000
Страница 4: ......
