Siemens SIMATIC MV550 S Operating Instructions Manual page 137

STL program
Table 9- 42
m001:
SIMATIC MV500
Operating Instructions, 05/2019, C79000-G8976-C494-02
Structure of the STL program
//Enter data ID (in principle only necessary in the first cycle)
L B#16#81
T AB 8
// Check number of data packet for 1
L EB 5
L 1
<> I
SPB m001
// Import user data from the optical reader
L ED 9
T DB17.DBD 4
L ED 13
T DB17.DBD 8
L ED 17
T DB17.DBD 12
L ED 21
T DB17.DBD 16
L ED 25
T DB17.DBD 20
L ED 29
T DB17.DBD 24
L EW 33
T DB17.DBW 28
L EB 35
T DB17.DBB 30 /
// Acknowledge with no. of data packet
L EB 5
T AB 5
BEA
Process interfacing via an automation system (PLC, PC)
// Only result string
// No. of the data packet from the optical reader
// If no. ≠ 1
// ... user data is not available yet
// Read first 4 bytes of user data
// Store in DB
// Read next 4 bytes of user data
// Store in DB
// Read next 4 bytes of user data
// Store in DB
// Read next 4 bytes of user data
// Store in DB
// Read next 4 bytes of user data
// Store in DB
// Read next 4 bytes of user data
// Store in DB
// Read second last 2 bytes of user data
// Store in DB
// Read last byte of user data
// Store in DB
// Number of data packet
// Send as acknowledgment to optical reader
9.4 Control with FB 79
137