Siemens SIMATIC PCS 7 Function Manual page 36

BATCH interface blocks
2.4 IUNIT_BLOCK
Definition of the Q_Status
Bit Meaning
0 Step control by operator
1 Step control by transition
2 Step control by operator and transition
3 Step control by condition or transition
4 Not used
5 Not used
6 Step control mode affects the phase level
7 Step control mode affects the operation level
8
9
10
11
12
13
14
15
16 Reserved
17 Reserved
18 Reserved
19 Reserved
20 Reserved
21 Reserved
22 Free
23 Free
24 OCCUPIED
25 BA_EN
26 PEND_OOS
27 Free
28 Free
29 Free
30 Free
31 Reserved
36
Remark
Bits 8 to 15: Identical to RUP_STAT
IUNIT_BLOCK is occupied
Enabled for BATCH
Pending out of Service; BA_EN = 0 is set at the
earliest opportunity (allocation is canceled).
SIMATIC BATCH Interface Blocks V7.1
Function Manual, 03/2009, A5E02171101-01