12/5/2021 11:49 AM | |
Joined: 9/27/2006 Last visit: 9/18/2024 Posts: 12282 Rating: (2684)
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Hello MJ90, Here is a link to the CPU-CPU Communications Compendium, the manual you show in your attachment: https://support.industry.siemens.com/cs/us/en/view/78028908 The S7 Basic communication functions are described in Ch. 31 of the manual.
The S7 basic communication is characterized by the following characteristics: • Communication only via the integrated interface of the CPU • Communication via connections. The connections are established by the communication block (Configuration is not necessary in STEP 7). • Data volume per communication job: < 94 bytes • The user program in the sender contains an item of information if the data in the user data area of the receiver have arrived (confirmation by the remote application). S7 Communication functions can be found in Ch. 32. The S7 communication is characterized by the following characteristics: • Network-independent user interface: Identical handling for PN/IE, PB and MPI • Communication via integrated interface of the CPU or via external interface of CP or CM. • Communication via configured connections (S7 connection). • Data volume per communication job: <= 64 Kbytes • The user program in the sender contains an item of information if the data in the user data area of the receiver have arrived (confirmation by the remote application). Daniel Chartier |
Last edited by: dchartier at: 12/05/2021 11:52:13 |
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