Siemens SINUMERIK 840C Installation Manual page 131

5 PLC Interface
5.2 Basic signals
Byte No.
7
FY 12
FY 13
FY 14
FY 15
FY 16
FY 17
FY 18
FY 19
Byte No.
7
FY 20
FY 21 2nd inter- 1st inter-
face module face module
CL CL
Signal to Signal from
FY 22
CSB: data CSB: power
saved (from failure (from
SW 6.3) SW 6.3)
FY 23
Byte No.
7
FY 24 Meas. Meas.
probe probe
actuated 1 actuated 2
5–14
Signals for alarm-controlled processing
Bit No.
6 5 4
N e g a t i v e e d g e o f t h e p r o c e s s a l a r m b y t e
B y t e N o . n
B y t e N o. ( n + 1 )
B y t e N o. ( n + 2 )
B y t e N o. ( n + 3 )
P o s i t i v e e d g e o f t h e p r o c e s s a l a r m b y t e
B y t e N o . n
B y t e N o. ( n + 1 )
B y t e N o. ( n + 2 )
B y t e N o. ( n + 3 )
NC Ready signals
Bit No.
6 5 4
Single signals
Bit No.
6 5 4
NC alarm
CPU
with mach.
failure
stop
© Siemens AG 1992 All Rights Reserved
3 2 1
3 2 1
Drives NC CPU
ready ready
3 2 1
Fault over- Temper-
Battery
temperature ature
warning
fan warning
SINUMERIK 840C (IA)
01.99
0
0
MMC CPU
ready
0
NC alarm
present
6FC5197- AA60