Siemens SIMATIC C7-621 Manual page 56

Program Example
DB46:
OB 1:
Network 1 : Route process image of AS-i line to DB
OPN DB1
L PIW 256
T DBW
L PIW 258
T DBW
Network 2 : Call system component belt control
CALL FC 1
Network 3 : Call system component ejector
Call FC 2
Network 4 : Write outputs
L DBW
T PQW 256
L DBW
T PQW 258
BE
FC1: Belt control
Network 1 : Initial position
AN DB1.DBX0.0
AN DB1.DBX1.0
A DB1.DBX0.1
AN M16.0
= M15.0
Network 2 : Belt ON
A DB1.DBX2.0
A M 15.0
S DB1.DBX4.0
Network 3 : Belt OFF
A DB1.DBX2.3
O M 16.0
R DB1.DBX4.0
56
0
2
4
6
// Opto_Bero: no parcel
// Position switch: no parcel
// Ejector in initial position
// No fault
// Initial position
// Belt_ON switch on casing
// Initial position
// Conveyor belt ON
// Belt_OFF switch on casing
// Fault
// Output Belt_ON
Getting Started with C7-621-AS-i
04/99