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Siemens SIMATIC S7-1200 CP 1243-8 IRC User Manual

Siemens SIMATIC S7-1200 CP 1243-8 IRC
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Configuration
4.18 Data points
CP 1243-8 IRC
152 Operating Instructions, 02/2018, C79000-G8976-C385-03
Time [s]
(calculation cycle)
Process value
stored in the
send buffer
Current process
value
Absolute deviation
from the stored
value
Integrated devia-
tion
4.0
20.4
-0.1
-0.1
4.5 20.1 -0.4 -0.5
5.0
19.9
-0.6
-1.1
5.5
20.1
-0.4
-1.5
6.0
19.9
19.9
-0.6
-2.1
With the changes in the process value shown in the example, the threshold value trigger
configured with 2.0 fires twice:
At the time 3.5 s: The value of the integrated deviation is at 2.0. The new process value
stored in the send buffer is 20.5.
At the time 6.0 s: The value of the integrated deviation is at 2.1. The new process value
stored in the send buffer is 19.9.
In this example, if a deviation of the process value of approximately 0.5 should fire the
trigger, then with the behavior of the process value shown here a threshold value of
approximately 1.5 ... 2.5 would need to be configured.
4.18.11
Analog value preprocessing
CPs with data point configuration support analog value preprocessing. For analog value data
points, some or all of the functions described below can be configured.
Requirements and restrictions
You will find the requirements for the configuration of the preprocessing options and
restrictions in the section relating to the particular function.
Note
Restrictions due to configured triggers
The a
nalog value preprocessing options "Error suppression time", "Limit value calculation"
and "Smoothing" are not performed if no threshold value trigger is configured for the relevant
data point. In these cases, the read process value of the data point is ent
ered in the image
memory of the CP before the preprocessing cycle of the threshold value calculation (500
ms)
elapses.

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Siemens SIMATIC S7-1200 CP 1243-8 IRC Specifications

General IconGeneral
Product TypeCommunication Processor
SeriesSIMATIC S7-1200
ModelCP 1243-8 IRC
Data Transfer Rate10/100 Mbps
Power Supply24 V DC
MountingDIN rail
Dimensions (W x H x D)45 mm x 100 mm x 75 mm
Digital Inputs Quantity0
Digital Outputs Quantity0
Supported ProtocolsISO-on-TCP
InterfaceEthernet
IP AddressingStatic, DHCP
ConfigurationSTEP 7 Basic/Professional
Operating Temperature-20°C to +60°C
WeightApprox. 200 g

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