Technical data

Table Of Contents
SFBs for Integrated Control
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
27-27
Calling the Block and Connecting it
The fixed setpoint controller with switching output for proportional actuators
PULS_CTR consists of the blocks CONT_C and PULSEGEN. The block call is
implemented so that CONT_C is called every 2 seconds (=CYCLE*RED_FAC) and
PULSEGEN every 10 ms (=CYCLE). The cycle time of OB35 is set to 10 ms. The
interconnection can be seen in the following figure.
During a warm restart, the block PULS_CTR is called in OB100 and the input
COM_RST is set to TRUE.
OB 100 (
warm restart
)
OB 35 (10ms)
TRUE (OB 100)
FALSE (OB35)
T#10
200
PULS_CTR, DPULS_CTR
FB 50, DB 50
PULS_CTR, DPULS_CTR
FB 50, DB 50
COM_RST
CYCLE
RED_FAC
COM_RST
CYCLE
RED_FAC
SP_INT
PV_PER
COM_RST
CYCLE
COM_RST
CYCLE
PER_TM
INV
QPOS
_
P
SP_INT
PV_PER
LMN
QPOS_P
PULSEGEN
CONT_C
CONT_C call reduced
by RED_FAC