Diagnostics with the CP 341
8.1 Diagnostics Functions of the CP 341
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01
189
Event Class 4 (04H):
"CP detected error in data traffic CP - CPU"
Event no.
Event text
Remedy
(04)03H
Incorrect, unknown or illegal data type
Check program, e.g. for incorrect parameter
assignment of FB.
(04)07H
An error has occurred during data transmission
between the CPU and CP
If the error is signaled continuously, you must check
whether the parameters of the FBs called in the user
program are correctly assigned.
If the error is signaled immediately after POWER ON, a
connection to the CPU is not set up at this time. With
the 3964(R) procedure and the ASCII driver, the data
transmission of the receiving CP 341 is repeated until
the data are transferred to the CPU. With RK 512, the
request is acknowledged negatively and must be
repeated in the user program.
If the message occurs sporadically during active data
transmission, the CPU can not accept the data at
times. With the 3964(R) procedure and the ASCII
driver, the data transmission of the receiving CP 341 is
repeated until the data are transferred to the CPU.
With RK 512, the request is acknowledged negatively
and must be repeated in the user program. As a
remedy, you should call the FB P_RCV_RK more
frequently in your user program.
(04)08H
Error during data transmission between the CPU
and the CP (receipt)
•
CPU is temporarily overloaded, request is
repeated
•
The data area of the CPU cannot be
accessed for the time being, e.g., because
the receive block is not called often enough.
•
The data area of the CPU cannot be
accessed for the time being, e.g., because
the receive block is disabled in the interim
(EN=false).
•
Reduce the number of communication calls
•
Call the receive block more often
•
Check whether the receive block has been disabled
too long
(04)09H
Data cannot be received. Error during data
transmission between the CPU and the
CP (receipt). Data cannot be received. After
multiple attempts, the request was cancelled
after 10 s, because
•
Receive block is not called
•
Receive block is disabled
•
Data area of the CPU cannot be accessed
•
Data area of the CPU is too small
•
Check your user program to determine whether the
receive block is being executed.
•
Check whether the receive block is disabled.
•
Check whether the data area to which the data is to
be transferred is available.
•
Check the length of the data area
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