8.4
Setting Up a Parametric DB
Parametric DB
The parametric DB contains the parameters required by the TD 390 to
display messages.
Parametric
The meaning of the inputs in the parametric DB are explained under the
DB format
DWs in the table below.
Example of parametric DB:
DW
KS = 'MASKTD';
0:
3:
KY = 002,020;
4:
KY = 000,051;
5:
KY = 003,052;
6:
KY = 006,053;
7:
KY = 009,054;
8:
KY = 012,055;
9:
KY = 015,056,
10:
KY = 018,057
11:
KY = 004,028
12:
KY = 012,000;
13:
KH = EEEE;
Explanation of parameter inputs in the parameteric DB. The DWs are
allocated to the example above.
DW
Entry
Explanation
0
MASKTD
TD identifier.
By this identifier, the TD 390 recognizes whether the DB is a
parametric DB. If this identifier is not present, the message
"Parametric DB invalid" appears in the TD.
3
DL: Scan time
Speed in seconds (e.g. 002) at which messages are to be read
repeatedly in the PLC and transferred to the TD message buffer.
Scan time: 1 to 120 (s)
DR: Message
Here, select the length of a message on the display.
length
20 = message length: 20 characters.
40 = message length: 40 characters.
TD 390
C79000–K8576–C292–01
Creating a PLC Program for the TD 390
Identifier for parametric DB
Scan time 2 s, text length 20 ch.
Text DB 1: FY0 to FY2. DB51
Text DB 2: FY3 to FY5. DB52
Text DB 3: FY6 to FY8. DB53
Text DB 4: FY9 to FY11. DB54
Text DB 5: FY12 to FY14. DB55
Timer/counters. FY15 to FY17. DB56
Process values. FY18 to FY20. DB57
Enable set time. FY28
Time DB12, DW0.
End identifier
8-5