Siemens S7-300 - Page 239

Linking to other systems with FETCH/WRITE
Configuring and commissioning S7 CPs for Industrial Ethernet
Configuration Manual, 09/2013, C79000-G8976-C182-13
239
S7
address area
PI/PQ
C
T
ORG ID
05
H
06
H
07
H
Source/dest. data
from/to I/O modules.
With source data
input modules, with
dest data output
modules
Source/dest data
from/to counter cells
Source/dest data
from/to timer cells
DBNR
irrelevant
irrelevant
irrelevant
Start address I/O byte no., from
which the data is
taken or written to
Number of the
counter cell from
which the data is
taken or written to
Number of the timer
cell from which the
data is taken or
written to
permitted range 0...127
digital I/O 128...255
analog I/O
0...255 0...255
Quantity Length of the
source/dest. data
field in bytes
Length of the
source/dest. data
field in words
(counter cell = 1
word)
Length of the
source/dest. data
field in words
(counter cell = 1
word)
permitted range
1...256
1
1