Siemens SIMATIC S5 ET 200U - Approaching a Setpoint in Up-Count Direction

9-38
ET 200U Distributed I/O Station
EWA 4NEB 812 6087–02b
Figure 9-22 illustrates approaching a setpoint in an up–count direction.
1000 2000 3000 4000 5000 6000 7000
Setpoint
Enable
Input
Output, Diag–
nostics Bit
Setpoint Reached
Example of
Actual Value
Direction of Traverse
Figure 9-22 Approaching a Setpoint in Up–Count Direction
The actual values have the following significance:
 With actual value = 1000, the enable input is set to 1.
 With actual value = 3000, the setpoint is reached, output and diagnostics
bit “setpoint reached” are set.
 With actual value = 6000, the enable input is set to 0, output and diagnos-
tics bit are reset.
Figure 9-23 illustrates approaching a setpoint in a down–count direction.
1000 2000 3000 4000 5000 6000 7000
Setpoint
Direction of Traverse
Enable
Input
Output, Dia–
gnostics Bit
Setpoint Reached
Example of
Actual Value
Figure 9-23 Approaching a Setpoint in Down–Count Direction
The actual values have the following significance:
 With actual value = 7000, the enable input is set to 1.
 With actual value = 3000, the setpoint is reached, the output and the diag-
nostics bit “setpoint reached” are set.
 With actual value = 1000, the enable input is set to 0, the output and the
diagnostics bit are reset.
Example
Example
Function Modules