Diagnostics with the CP 440
8.3 Diagnostics Messages of the Function Blocks
Point-to-point connection CP 440 Installation and Parameter Assignment
Manual, 09/2007, A5E00057742-03
119
Event Class 5 (05H): "Error processing a CPU requrest"
Event no. Event To correct or avoid errors
(05)01H Current request aborted as a result of CP restart. No remedy is possible at POWER ON. When
changing the parameters of the CP in the
programming device, before writing an interface you
should ensure there are no more requests running
from the CPU.
(05)02H Request not permitted in this operating mode of
CP (e.g. device interface parameters are not set).
Set the parameters for the device interface.
(05)0EH
• Invalid message frame length
or
• The configured end-of-text characters did not
occur within the maximum permissible length.
• The message frame is >400 bytes (Page 86) in
length. Select a shorter message frame length.
or
• Add the end-of-text characters at the place you
want in the send buffer.
(05)17H Transmission length > 400 bytes (Page 86) is too
large for the CP
Split the job up into several shorter jobs.
(05)1DH Send/receive job interrupted by:
• Communication block reset
• Parameter reassigment
Repeat the call for the communication block.
(05)22H A new SEND job has been started, although the
old job has not yet been completed.
Only start the new SEND job when the old job has
been completed with DONE or ERROR.
Event Class 7 (07H): "Send error"
Event no. Event To correct or avoid errors
(07)01H With 3964(R) only:
Sending the first repetition:
• An error was detected during transmission of
the message frame, or
• The partner requested a repetition by means of
a negative acknowledgment code (NAK).
A repetition is not an error, however, it can be an
indication that there are disturbances on the
transmission line or a malfunction of the partner
device. If the message frame has still not been
transmitted after the maximum number of repetitions,
an error number describing the first error that
occurred is output.
(07)02H With 3964(R) only:
Error during connection setup:
After STX was sent, NAK or any other code
(except for DLE or STX) was received.
Check for malfunctioning of the partner device,
possibly using an interface test device switched into
the transmission line.
(07)03H With 3964(R) only:
Acknowledgment delay time exceeded:
After STX was sent, no response came from
partner within acknowledgment delay time.
The partner device is too slow or not ready to
receive, or there is a break on the send line, for
example. Identify the malfunctioning of the partner
device, possibly by using an interface test device
switched into the transmission line.
(07)04H With 3964(R) only:
Termination by partner:
During current send operation, one or more
characters were received by partner.
Check whether the partner is also showing an error,
possibly because not all transmission data has
arrived (e.g. due to break on line) or due to serious
faults or because the partner device has
malfunctioned. Identify the malfunction, possibly by
using an interface test device switched into the
transmission line.
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