Specifications

IP 240 Positioning
Fig. 10-13. Switching Performance of the IP Outputs when DAV=2
Output
D2
Sample
actual
value
Position
valid
Output
D1
BEE1
Positive direction of travel
350020001000
BEE2
BEE2
Negative direction of travel
3500
Status bit
BEE1
Status bit
RICH
BEE1
3000 4000
a: When the position was selected, the actual value was
less than the position value for the target position
b: When the position was selected, the actual value was
less than the position value for the target position
5000 6000
prior to selection of the target position
Selection of
the target
position
Switching
points for the
target position
Position
value for the
target position
Selection of
the target
position
Switching
points for the
target position
Position
value for the
target position
To monitor switching of the traversing speed, you can scan status bit BEE1 cyclically on the IP 240
after positioning has started or evaluate the interrupt (BE1) generated by the negative edge of
the BEE1 bit. In this way, you can control two additional PLC digital outputs over the S5 CPU.
Note
In the case of a rotary axis, the IP 240 always switches the outputs so that the target
position is reached over the shortest possible path.
10.5.4 Recommendations for Selecting the Switching Performance
It is recommended that the IP outputs show the following switching performance when the IP is
used for axis control:
Table 10-11. Recommendations for Selecting the Switching Performance of the IP Outputs
One direction of travel Two directions of travel
One
traversing speed
The IP outputs control the
traversing speed
The IP outputs control the
direction of travel
Two
traversing speeds
The IP outputs control the
traversing speed
The IP outputs control the
traversing speed
EWA 4NEB 811 6120-02a 10-19