Configuration and operation
4.7 Configuration in STEP 7 Basic
CP 1243-8 IRC
Operating Instructions, 06/2015, C79000-G8976-C385-01
69
Note
Number of PLC tags
Remember the maximum possible number of PLC tags the can be used for data point
configuration in the section Performance data and configuration limits (Page 18).
The formats and S7 data types of the PLC tags that are compatible with the protocol-specific
data point types of the CP can be found in the section Datapoint types (Page 70).
Access to the memory areas of the CPU
The values of the PLC tags or DBs referenced by the data points are read and transferred to
the communications partner by the CP.
Data received from the communications partner is written by the CP to the CPU via the PLC
tags or DBs.
Configuring the data points and messages in STEP 7
You configure the data points in STEP 7 in the editor for the data point and message
configuration. You can find this using the project tree:
Project > directory of the relevant station > Local modules > CP 1200
Figure 4-11 Configuring data points and messages
You will find more information on configuration in the following sections and in the STEP 7
information system.
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