Siemens SINUMERIK 840C - Manual (Page 1133)

12 Functional Descriptions 01.99
12.35 Uninterruptible power supply (UPS) (as from SW 6.3) (Express shutdown)
Example: PLC program for the initiation of an ”Express shutdown”
A DB255 User DB
L KF 10 Package length
T DW 10
L KH 0201 Sender (PLC)
T DW 11
L KH 0319 Receiver (MBX)
T DW 12
L KH 001 Task data structure
T DW 13
L KH 5F02 Task number
T DW 14
L KH 2F04 I code
T DW 15
L KH 0090 Control flag
T DW 16
BA FX73
OEM-SEND
DBTY KC DB
DBNR KF 255
DWNR KF 10
QTTG 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.
BA FX74
OEM-EMPF
DBTY KC DB
DBNR KF 255
DWNR KF 20
OEMN KF 0
QTTG KF 195
Data received:
(as acknowledgement, ”Express shutdown” implemented, the I code is returned)
DB 255
DW20 KH = 0004 Package length
DW21 KH = 0319 Sender (MBX)
DW22 KH = 0201 Receiver (PLC)
DW23 KH = 0001 Task data structure
DW24 KH = 0000 Task number
DW25 KH = 2F04 I code
DW26 KH = 0094 Control flag
12–358 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)