Consistent Data - Siemens CPU 313C Hardware And Installation Manual

$GGUHVVLQJ
&38 & 3W3 DQG &38 & '3
The integrated inputs and outputs of these CPUs have the following addresses:
Table 8-4
,QSXWV2XWSXWV
24 digital inputs
16 digital outputs
4 +1 analog inputs
2 Analog outputs
5HPDUNV
You cannot influence outputs with transfer instructions if they are assigned to
technological functions.
I/O not configured for technological functions can be used as standard I/O.
 &RQVLVWHQW 'DWD
&RQVLVWHQW GDWD
The table below illustrates the points to consider with respect to communication
LQ D '3 PDVWHU V\VWHP if you want to transfer I/O areas with "Total length"
consistency.
The address area of consistent data in the process image is automatically updated.
To read and write consistent data, you can also use SFC 14 and SFC 15.
If the address area of consistent data is not in the process image, you must use SFC 14
and SFC 15 to read and write consistent data.
Direct access to consistent areas is also possible (e.g. L PEW or T PAW).
You can transfer a maximum of 32 bytes of consistent data.
8-8
Integrated inputs and outputs on the CPU 314C-2 PtP/DP
'HIDXOW DGGUHVVHV
124.0 to 126.7
of those are 16 Inputs for
technological functions:
124.0 to 125.7
124.0 to 125.7
of those are 4 Inputs for
technological functions:
124.0 to 124.3
752 to 761
752 to 755
&38  '3 &38  '3 &38 [&
S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x
5HPDUNV
All digital inputs can be programmed
as interrupt input.
Optional technological functions:
• Counting
•
Frequency measurement
•
Pulse width modulation
•
Positioning
A5E00105492-03