Reading And Evaluating The Ip Status Information - Siemens Simatic S5 IP 240 Manual

IP 240

10.16 Reading and Evaluating the IP Status Information

This includes:
• the current (feedback) position number
• the status bits
• the current actual value
• the stored final value (is entered only in cyclic synchronization mode)
Table 10-20. Contents of the DB and the Transfer Buffer on Reading the Status Information
Data byte
in data
7
block
DL 28
0
DR 28
7
2
DL 29
0
DR 29
DA2 DA1
DL 30
DR 30 23
2
DL 31
15
2
DR 31
7
2
DL 30
DR 30
DL 31
DR 31
DL 32
DR 32
23
2
DL 33
15
2
DR 33
2 7
DL 32
DR 32
DL 33
DR 33
EWA 4NEB 811 6120-02a
Bit
6 5 4 3
. . . 0 0
6 5 4 3
2 2 2 2
0 RIUM ZBEV UEBS DRBR NPUE UEBL
MESE BEE3 BEE2 BEE1 RICH SYNC
SE
22 21 20 19
2 2 2 2
14 13 12 11
2 2 2 2
6 5 4 3
2 2 2 2
SG
5
10
3
10
1
10
SE
22 21 20 19
2 2 2 2
14 13 12 11
2 2 2 2
2 6 2 5 2 4 2 3
SG
5
10
3
10
1
10
Offset
in transfer
2 1 0
buffer
0
. . . 0
1
2 1 0
2 2 2
2
3
4
18 17 16 5
2 2 2
6
10 9 8
2 2 2
7
2 1 0
2 2 2
4
6
10
4 5
10
6
2
10
7
0
10
8
9
18 17 16
2 2 2
10
10 9 8
2 2 2
11
2 2 2 1 2 0
8
6
10
4 9
10
10
2
10
11
0
10
Positioning
Description
Feedback position
number
Status bits
Actual value
in binary
A negative value is in two's
complement representation.
SE=Sign extension
Actual value
in BCD
"1111" is entered in the
high-order nibble of DL30.
(SG) for a negative number
Final value
in binary
A negative value is in two's
complement representation.
SE=Sign extension
Final value
in binary
"1111" is entered in the
high-value nibble of DL32
(SG) for a negative number.
10-57