Ip Responses At The Start Of Positioning - Siemens Simatic S5 IP 240 Manual

IP 240
If the channel was structured for backlash compensation and the actual position is above the
target position (RICH=1), output D2 is automatically set if the IP outputs have been enabled.
When the BEE2 range is exited, the IP output must be reset via the S5 CPU by transferring control
bit FREI=0 to the IP 240.
The following table shows you how the IP 240 uses the various combinations of status bits BEE1 to
BEE3 to set the IP outputs and generate interrupts. Note the differences produced by backlash
compensation/no backlash compensation.
Switching and
signalling ranges
Starting position
Table 10-25.
States of the status
bits following
selection of the new
target position
BEE1 BEE2 BEE3 RICH D1
1 1 1
0 1 1
0 0 1
0 0 0
0 0 0
0 0 1
0 1 1
1 1 1
States of the status
bits following
selection of the new
target position
BEE1 BEE2 BEE3 RICH D1
1 1 1
0 1 1
0 0 1
0 0 0
0 0 0
0 0 1
0 1 1
1 1 1
X=Output is set or an interrupt generated and the corresponding interrupt bits are set
E.g.: Start in zone BEE2=0/BEE3=1
RICH=1
Interrupt BE1
DA2=1
EWA 4NEB 811 6120-02a
BEE3
BEE2
BEE1

IP Responses at the Start of Positioning

Without backlash compensation
Outputs set
DAV =0 DAV=1
D2 D1
0 X X
0 X
0
0
1
1
1 X
1 X X
With backlash compensation
Outputs set
DAV =0 DAV=1
D2 D1
0 X X
0 X
0
0
1
1 X
1 X
1 X X
The drive is between cut-off point and target range.
The drive is above the target position.
The drive must traverse at creep speed .
The drive switched on to "overrun the position" via D2.
BEE3
BEE2
Interrupts
DAV=2 generated
D2 D1 D2 BE1 BE2 BE3
X X
X X X
X
X
X
X
X X X
X X
Interrupts
DAV=2 generated
D2 D1 D2 BE1 BE2 BE3
X X
X X X
X
X
X
X X X
X X X
X X
Positioning
BEE1
X
X X
X X
X
X
X X
X X
10-71