Technical data
3 Programming with Symbols
3.1 Absolute Addresses
Every input and output has an absolute address predefined by the hardware
configuration. This address is specified directly; that is, absolutely.
The absolute address can be replaced by any symbolic name you choose.
SF
BATF
DC 5V
FRCE
RU
RUN
STOP
M RES
ON
OFF
RUN
N P
STOP
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
0
1
2
3
6
7
4
5
0
1
2
3
4
5
6
7
L+
L+
M
N
L+
M
M
M
L+
Digital output
module
Digital input
module
Byte 4
Byte 0
Bits 0 to 7
Bits 0 to 7
Digital input
module
Byte 1
Bits 0 to 7
Digital output
module
Byte 5
Bits 0 to 7
Absolute address: I 1.5
Bit 5 Byte 1
Input
You should only use absolute programming if you do not
have to address many inputs and outputs in your S7
program.
STEP 7 Getting Started
C79000-P7076-C48-01
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