Basic Principles of Serial Data Transmission
2.8 Configuration data
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01 83
Extended error display at the receive FB
Table 2- 7 Receive Buffer on CP (3964(R) Procedure)
Parameters Description Range of
values
Default value
Extended error display at the
receive FB
Activate the parameter "Display receive error at FB" to
also display a message frame received with errors at the
status output of the function block P_RCV_RK.
If the parameter is deactivated, an entry is only created in
the diagnostic buffer of the CP 341.
• Yes
• No
No
X27 (RS 422) interface
You will find a description of the parameters for the X27 (RS 422) interface in the table
below. RS 485 operation is not possible in conjunction with the 3964(R) procedure.
Table 2- 8 X27 (RS 422) interface (3964(R) procedure)
Parameters Description Range of values Default value
None: This setting only makes sense with bus-
capable special drivers.
None
R(A) 5V / R(B) 0V: Break detection is possible in
this initial state.
R(A) 5V / R(B) 0V
Receive line initial
state
R(A) 0V / R(B) 5V: Break detection is not
possible in this initial state.
(also see the following figure)
R(A) 0V / R(B) 5V
R(A) 5V / R(B) 0V
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