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Siemens SIMATIC S7 CP340 - Page 57

Siemens SIMATIC S7 CP340
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5 MODBUS RTU Protocol communication
CP340/CP341/CP440/CP441 Communication and Programming
Entry-ID: 88867653, V1.0, 02/2014
57
Siemens AG 2014 All rights reserved
Fig. 102: Configuration connection
5. Click to save and compile the configuration information. If there is no
error, select CPU to download the configuration information as a whole, and
use to check the connection status online till the displayed icon of
"connection status" is: * to indicate correct connection.
6. When CP441 makes MODBUS communication, the "Startup" parameter in
CPU properties shall also be changed.
Fig. 103: Change "Startup" parameter in CPU properties

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