Addressing And Installation; Address Assignments In The Cpu - Siemens S7-300 Installation And Operating Manual

Addressing and installation

4.1

Address Assignments in the CPU

Address assignment in standard and safety mode
The fail-safe signal modules occupy the following address ranges in the CPU/F-CPU:
● In standard mode: The full I/O area (within and outside the process image)
● In safety mode for
Table 4- 1
SM 326; DI 24 x DC 24 V
SM 326; DI 8 x NAMUR
SM 326; DO 8 x DC 24V/2A PM
SM 326; DO 10 x DC 24V/2A
SM 326; F-DO 10 x DC 24V/2A PP
SM 336; AI 6 x 13Bit
SM 336; F-AI 6 x 0/4 ... 20 mA HART
x = module start address
Address assignment of user data
Of the assigned addresses in standard and safety mode of the F-SMs, the user data occupy
the following addresses in the CPU/F-CPU.
Table 4- 2 Address assignment of user data
Bytes in the CPU
SM 326; DI 24 x DC 24 V:
x + 0
x + 1
x + 2
SM 326; DI 8 x NAMUR:
x + 0
Fail-safe signal modules
Installation and Operating Manual, 01/2010, A5E00085586-10
S7 Distributed Safety
process image
Address assignment in standard and safety mode
Module
7 6
Channel 7 Channel 6
Channel Channel
15 14
Channel Channel
23 22
Channel 7 Channel 6
and for
In the input area
x + 0 to x + 9
x + 0 to x + 5
x + 0 to x + 4
x + 0 to x + 5
x + 0 to x + 5
x + 0 to x + 15
x + 0 to x + 15
Assigned bits in the CPU for each module:
5 4
Channel 5 Channel 4
Channel Channel
13 12
Channel Channel
21 20
Channel 5 Channel 4
S7 F/FH Systems
in the area of the
Bytes occupied in the CPU:
3 2
Channel 3 Channel 2 Channel 1 Channel 0
Channel Channel
11 10
Channel Channel
19 18
Channel 3 Channel 2 Channel 1 Channel 0
4
In the output area
x + 0 to x + 3
x + 0 to x + 3
x + 0 to x + 4
x + 0 to x + 7
x + 0 to x + 7
x + 0 to x + 3
x + 0 to x + 3
1 0
Channel 9 Channel 8
Channel Channel
17 16
31