Siemens Sinumerik 802D sl Instruction Manual page 175

Table 11-5
Double Word Access
Table 11-6
SM 0.0
SM 0.1
SM 0.2
SM 0.3
SM 0.4
SM 0.5
SM 0.6
The user can only view the statement list (STL) in PT802 under "View STL". This type of
representation (see Table : Mnemonic) shows the sequential processing.
Siemens Automation Parts
SINUMERIK 802D sl Instruction Manual (BA), 05/2005 Edition
6FC5 397-0CP10-1BA0
802D Operand Ranges, continued
Access Method
Special bit memory SM Bit Definition
SM bits
Bit memory with defined ONE signal
Initial position: first PLC cycle '1', subsequent cycles '0'
Buffered data lost – only valid in the first PLC cycle
('0' – data o.k., '1' – data lost)
POWER ON: first PLC cycle '1', subsequent cycles '0'
60 s clock (alternating '0' for 30 s, then '1' for 30 s)
1 s clock (alternating '0' for 0.5 s, then '1' for 0.5 s)
PLC cycle clock (alternating one cycle '0', then one cycle')
11.4
Valid Operand Ranges for
Programming 802D
VD(1000 0000–7999 9994)
ID(0–14)
QD(0–8)
MD(0–380)
AC(0–3)
–
–
AC(0–3)
KD (Constant)
Description
Starting Up the PLC
PLC programming
11-173