Siemens SINUMERIK 840C Installation Instructions Manual page 1133

12 Functional Descriptions
12.35 Uninterruptible power supply (UPS) (as from SW 6.3) (Express shutdown)
Example: PLC program for the initiation of an "Express shutdown"
A
L
T
L
T
L
T
L
T
L
T
L
T
L
T
BA
DBTY
DBNR
DWNR
QTTG
.
.
.
BA
DBTY
DBNR
DWNR
OEMN
QTTG
Data received:
(as acknowledgement, "Express shutdown" implemented, the I code is returned)
DB 255
DW20
DW21
DW22
DW23
DW24
DW25
DW26
12–358
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DB255 User DB
KF 10 Package length
DW 10
KH 0201 Sender (PLC)
DW 11
KH 0319 Receiver (MBX)
DW 12
KH 001 Task data structure
DW 13
KH 5F02 Task number
DW 14
KH 2F04 I code
DW 15
KH 0090 Control flag
DW 16
FX73
OEM-SEND
KC DB
KF 255
KF 10
KF 192
Scanning of the OEM information bit (PLC-MD 137).
Only once bit "0" or "1" has been set, then data
(acknowledgement) are present in the mailbox.
In this dependency the FX74 is called up.
FX74
OEM-EMPF
KC DB
KF 255
KF 20
KF 0
KF 195
KH = 0004 Package length
KH = 0319 Sender (MBX)
KH = 0201 Receiver (PLC)
KH = 0001 Task data structure
KH = 0000 Task number
KH = 2F04 I code
KH = 0094 Control flag
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SINUMERIK 840C (IA)