Siemens simatic c7-621, Руководство пользователя

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Program Generation 04/99
24 Getting Started with C7-621-AS-i
Network 2 : Belt ON
A DB1.DBX2.0 // Belt_ON button on casing
A M 15.0 // Initial position
S DB1.DBX4.0 // Conveyor belt ON
Network 3 : Belt OFF
A DB1.DBX2.3 // Belt_OFF button on casing
R DB1.DBX4.0 // Output Belt_ON
Network 4 : Operating mode display
A DB1.DBX4.0 // Belt ON
= DB1.DBX6.0 // Green lamp on casing
= M 21.0 // Message flag (required later)
Saving a block
You have now fully programmed your belt control. Save your function FC1 by clicking on the icon
in the toolbar.
For an executable program you must still write the AS-i input data to
DB1
at the start of the cycle and
the outputs from DB1 to the AS-i output data at the end of the cycle. To do this, open OB1 in the
SIMATIC Manager and insert the following networks and program lines.
Network 1 : Route process image of AS-i line to DB
OPN DB1
L PIW 256
T DBW 0
L PIW 258
T DBW 2
Network 2 : Call system component belt
CALL FC 1 // Belt control
Network 3 : Write outputs
L
DBW 4
T PQW 256
L DBW 6
T PQW 258
BE
Now save your OB1 by clicking on the icon in the toolbar.
Setting the operating mode
Select the System Function menu by pressing
S H IF T
0
on the C7-621-AS-i.
Select the C7 System Functions menu by pressing
F1
.