Siemens DP/AS-Interface Link 20E

Data Exchange Between the DP Master and AS-i Slave
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DP/AS-Interface Link 20E
Release 11/2002
C79000-G8976-C138–04
2.4.3 Programming Examples
Example of Programming for a SIMATIC S7
An analog input value of AS-i analog slave 6 is transferred as an analog output
value to AS-i analog slave 9:
Table 2-5
STL Explanation
L DB40.DBW 10
T DB40.DBW 32
CALL SFC 59
REQ :=TRUE
IOID :=B#16#54
LADDR :=W#16#120
RECNUM :=B#16#8D
RET_VAL :=MW130
BUSY :=M129.0
RECORD :=P#DB40.DBX 0.0 BYTE 32
CALL SFC 58
REQ :=TRUE
IOID :=B#16#54
LADDR :=W#16#120
RECNUM :=B#16#8E
RECORD :=P#DB40.DBX 32.0 BYTE 32
RET_VAL :=MW132
BUSY :=M129.1
//Slave 6, input channel 2
//Slave 9, output channel 1
//RD_REC
//Fixed value
//Start of cyclic input data
//DS141 (slave 5 and following)
//Return parameter
//Return parameter
//Receive buffer (slaves 5...8)
//WR_REC
//Fixed value
//Start of cyclic input data
//DS142 (slave 9 and following)
//Send buffer (slaves 9...12)
//Return parameter
//Return parameter
-