Siemens SINAMICS G110D Operating Instructions Manual page 163

items is decreased by 1. A pre-assigned count value needs to be entered prior to the running
of the conveyor system. When the count reaches '0', the conveyor belt is stopped.
Block: FB22
Example of timer and counter functions
Example of block parameters with parameter types
Network: 1
Network: 2
Network: 3
D1:
Network: 4
Figure 6-50
In the figure below, a method of accomplishing the counting of items on the conveyor and
monitoring the belt without the use of block parameters is shown.
SINAMICS G110D
Operating Instructions, 2009-05-15, A5E02385577A AB
Parts counter with monitor
Counter control
A #Light_barrier //When the light barrier is tripped
CD #Count //count down by 1
A #Set
L #Quantity //Pre-assignment of the count value
S #Count
O #Acknowledge
R #Count
AN #Count //When count value zero is reached,
= #Finished //output "Finished" signal
Activate monitor
A #Light_barrier
FP #EM_LB_P //Generation of pulse memory bit on
= #PM_LB_P //positive edge of the light barrier
A #Light_barrier
FN #EM_LB_N //Generation of pulse memory bit on
= #PM_LB_N //negative edge of the light barrier
A #Set
FP #EM_ST_P
S #Active //Activate monitor
A #Finished
A #PM_LB_N
O #Acknowledge
R #Active //Deactivate monitor
Monitor circuit
L #Dura1 //If the light barrier has "1", the jump
A #Light_barrier //JC to D1 is executed and the accumulator
JC D1 //contains "Dura1", otherwise, the
L #Dura2 //accumulator contains "Dura2"
A #Active
FP #EM_Ac_P //If there is a positive edge at "Active"
O #PM_LB_P //or a positive edge at the LB
O #PM_LB_N //or a negative edge at the LB
SE #Tim //the timer is (re)started
AN #Tim
A #Active //If the time has elapsed at "Active",
= #Fault //"Fault" is signaled
Block end
BE
Example conveyor application script - parts counter with monitor
6.11 Operation in fieldbus systems
Functions
163