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Programming LOGO!
3.9 Memory space and circuit program size
Analog multiplexer
Analog ramp
PI controller
Others
Latching relay
Pulse relay
Message texts
Softkey
Shift register
*: Bytes in the Rem memory area if retentivity is enabled.
Memory requirements (0BA7)
The table below shows an overview of the memory requirements for the basic and special
function blocks in LOGO! 0BA7:
Basic functions
AND
AND with edge evaluation
NAND (not AND)
NAND with edge evaluation
OR
NOR (not OR)
XOR (exclusive OR)
NOT (Negation)
Special functions
Timers
On-delay
Off-delay
On-/Off-delay
Retentive on-delay
Wiping relay (pulse output)
Edge triggered wiping relay
Asynchronous pulse generator
Random generator
Stairway lighting switch
Multiple function switch
Weekly timer
132
Function
Function
Program
Rem
memory
memory*
20
-
36
-
40
2
8
1
12
1
8
-
8
2
12
1
Program
Rem
memory
memory*
12
-
12
-
12
-
12
-
12
-
12
-
8
-
8
-
12
3
16
3
16
3
16
3
12
3
20
4
16
3
16
-
16
3
20
3
22
-
Manual, 04/2011, A5E03556174-01
LOGO!
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