Communication processor and Modbus TCP
13.3 Point-to-point (PtP) communication
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1139
● Receive message end configuration: Configure the CM 1241 to end a message when it
receives a maximum of 100 bytes or a linefeed character (10 decimal or a hexadecimal).
The end sequence allows up to five end characters in sequence. The fifth character in the
sequence is the linefeed character. The preceding four end sequence characters are
"don’t care" or unselected characters. The CM 1241 does not evaluate the "don’t care"
characters but looks for a linefeed character preceded by zero or more "don’t care"
characters to indicate the message end.
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