Specifications

Positioning IP 240
10.14 Selecting a Position
Positioning is started by selecting a position. The IP 240 uses the position value for the position
selected as the new setpoint, and computes the locations of ranges BEE1 to 3 from the specified
distance values.
You can define the new target position
• by selecting the number of a position (1 to 254) whose position value has been stored on the
IP 240 or
• by specifying a position value for position 0.
10.14.1 Selecting a Stored Position Between 1 and 254
You stored the position data for positions 1 to 254 on the IP 240 during configuring. To select a
stored position, you must transfer the number of that position and the control bits to the IP.
Table 10-17. Contents of the DB and the Transfer Buffer for Transferring the Control Bits and
the Position Number
Bit
76543210
Description
Data byte
in data
block
Offset
in transfer
buffer
Control bits
2AMSK ZYSY SOSY HASY DA2S DA1S HAND FREI DL 36
New position to be
approached (1 to 254)
12
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
DR 35
00 . . . 0 0 . . . 0DL 35
30 . . . 0 0 . . . 0DR 36
Transferring the control bits and the position number for positions 1 to 254
with control FB 168 in direct data interchange
You must enter the new control bits in DL 36
in the data block. Specify the new position
number as y value in the FKT parameter
when you call FB 168. The FB enters this value
in the data block in DR 35.
Initialize control FB 168 as follows:
: JU FB 168
NAME : STEU.POS
:
FKT : 21,y y=new position number
1 to 254
You must specify one of the following job
numbers to transfer the control bits and the
new position number:
• For channel 1: 1A
H
• For channel 2: 2A
H
.
If the bytes with offset 0 and 3 are also to be
transferred, they must first be initialized to
”0”.
If you transfer position number 255, the current position number is retained. An error is flagged if
you specify position number ”0”.
10-50 EWA 4NEB 811 6120-02a