Statement List (STL) - DCE FEL ČVUT v Praze

Programming Examples
The negated (inverted) RLO:
1
0
250 ms
Every 250 ms the RLO bit is 0. Then the BEC statement does not end the processing
of the block. Instead, the contents of memory byte MB100 is incremented by 1.
The contents of memory byte MB100 changes every 250 ms as follows:
0 -> 1 -> 2 -> 3 -> ... -> 254 -> 255 -> 0 -> 1 ...
Achieving a Specific Frequency
Statement List
From the individual bits of memory byte MB100 you can achieve the following
frequencies:
Bits of MB100 Frequency in Hertz Duration
M 100.0 2.0 0.5 s (250 ms on / 250 ms off)
M 100.1 1.0 1 s (0.5 s on / 0.5 s off)
M 100.2 0.5 2 s (1 s on / 1 s off)
M 100.3 0.25 4 s (2 s on / 2 s off)
M 100.4 0.125 8 s (4 s on / 4 s off)
M 100.5 0.0625 16 s (8 s on / 8 s off)
M 100.6 0.03125 32 s (16 s on / 16 s off)
M 100.7 0.015625 64 s (32 s on / 32 s off)
STL Explanation
A M10.0 //M 10.0 = 1 when a fault occurs. The fault lamp blinks at a frequency of 1
Hz when a fault occurs.
A M100.1
= Q 4.0
Statement List (STL) for S7-300 and S7-400 Programming
B-8 A5E00706960-01