Service and maintenance
10.1 Error and diagnostics messages
SIMATIC MV500
224 Operating Instructions, 03/2021, C79000-G8976-C494-05
10.1.2 Error messages
With error messages, the "IN_OP" signal (in operation) is reset and the "ER" LED is lit red
permanently.
In addition, the "Ready" or "Done" bit is reset with a connection via the Ident profile.
If the optical reader is connected to PROFINET IO, these error messages trigger a diagnostics
interrupt on the relevant I/O controller. Refer to I/O diagnostics for a description of how to
read out and evaluate the diagnostic information made available on the optical reader.
Table 10- 1 Error messages of the optical reader
Error mes-
sage
Value
Onboard
PROFINET
Value
TCP/IP
and
Value
Ident pro-
file
Description Corrective measures
nal interface
to the image
There is a fault in the con-
nection of the internal inter-
face to the image sensor.
If the error continues to occur
after the device has been turned
on again, contact technical sup-
DISA signal
When the program is saved,
the DISA signal is changed at
Check the sequence of applied
signals. Start the program saving
quence
While the program is being
saved, the time sequence of
applied signals is not ad-
Check the sequence of applied
signals. Start the program saving
process again.
cannot be
program damaged.
Reduce the memory require-
ments and repeat "Save pro-
An error occurred while
saving to read-only memory.
Please contact technical support
if this error occurs frequently.
TCP or RS232
The send buffer is full be-
cause the data cannot be
sent in an adequately short
time.
Reduce the trigger frequency.
With TCP: Process the results on
the server side faster.
A high load on the network to
which the optical reader is con-
nected can also block the trans-
fer of the data. If necessary,
check the network connection.
With RS-232: Increase the trans-
mission speed. In addition, the
size of the image buffer in the
WBM can be increased under
"Program > Image acquisition >
archiving/
MMI
The send buffer is full be-
cause the data cannot be
sent in an adequately short
time or the server is not
confirming receipt of the
data in time.
Reduce the trigger frequency or
reduce the amount of diagnostic
data to be archived. Process the
results on the server side faster.
A high load on the network to
which the optical reader is con-
nected can also block the trans-
fer of the data. If necessary,
check the network connection.