Siemens SIMATIC S7-300 Primeros Pasos página 73

VAR_TEMP
OB1_EV_CLASS : BYTE ;
OB1_SCAN_1 : BYTE ;
OB1_PRIORITY : BYTE ;
OB1_OB_NUMBR : BYTE ;
OB1_RESERVED_1 : BYTE ;
OB1_RESERVED_2 : BYTE ;
OB1_PREV_CYCLE : INT ;
OB1_MIN_CYCLE : INT ;
OB1_MAX_CYCLE : INT ;
OB1_DATE_TIME : DATE_AND_TIME ;
END_VAR
BEGIN
NETWORK
TITLE =Leer canales
//Se cargan los valores de canal (0 a 7) y se almacenan en el DB1 (valores de canal)
L PEW 256;
T DB1.DBW
L PEW 258;
T DB1.DBW
L PEW 260;
T DB1.DBW
L PEW 262;
T DB1.DBW
L PEW 264;
T DB1.DBW
L PEW 266;
T DB1.DBW
L PEW 268;
T DB1.DBW
L PEW 270;
T DB1.DBW
SM331; AI 8x12 Bit Getting Started 1ª parte: 4-20mA
Getting Started (primeros pasos), 05/2008, A5E00253412-04
//Bits 0-3 = 1 (Coming event),
Bits 4-7 = 1 (Event class 1)
//1 (Cold restart scan 1 of OB 1),
3 (Scan 2-n of OB 1)
//Priority of OB Execution
//1 (Organization block 1, OB1)
//Reserved for system
//Reserved for system
//Cycle time of previous OB1 scan (milliseconds)
//Minimum cycle time of OB1 (milliseconds)
//Maximum cycle time of OB1 (milliseconds)
//Date and time OB1 started
// Canal 0
0;
// Canal 1
2;
// Canal 2
4;
// Canal 3
6;
// Canal 4
8;
// Canal 5
10;
// Canal 6
12;
// Canal 7
14;
A.1 Fuente del programa de usuario
Anexo
73