Siemens S7-1200 - Page 43

6 LCCF_EnetScanner block
EtherNet/IP Scanner
Entry-ID: 109782314, V1.1.0, 04/2021
43
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SIMATIC S7-1200
For the S7-1200 controller the technical data are listed below
Table 6-9: Memory consumption S7-1200
Block
Load Memory
Work Memory
LCCF_EnetScanner
453.723Bytes
22.973 Bytes
instance DB
23.893 Bytes
13.220 Bytes
The Configuration of the EtherNet/IP IO system also requires some memory. When
configured with the description and the data organized as array in the same data
block, the required memory is listed below.
Table 6-10: Memory consumption for the EtherNet/IP IO system
Adapters
Load Memory
Work Memory
1
4.330 Bytes
1.284 Bytes
2
5.511 Bytes
2.468 Bytes
3
6.694 Bytes
3.644 Bytes
NOTE
With the LCCF_EnetScanner block the S7-1200 controller can control up to 8
EtherNet/IP adapters. This is a compromise between many factors, such as
update rates, CPU load and memory consumption.
The S7-1200 controllers allow for more than 8 OUC resources, which can be
used in specific applications.
NOTICE
Risk of overloading the controller
Configuring too many EtherNet/IP adapters can overload the controller and
cause the loss of control over the process, as the time required to retrieve sensor
signals may be larger than allowed for safe process control.
Evaluate the requirements of the process and select an appropriate, if in doubt
the larger, CPU model.