Siemens simatic hmi op27 Equipment Manual page 207

System Messages
Procedure for "in- In the case of all system messages that relate to "internal errors", please follow
ternal errors" the procedure outlined below.
a) Switch off the OP, set the PLC to STOP mode and then restart both units.
b) During startup, set the OP to download mode, downlaod the configuration
c) If the fault recurs, please contact your nearest Siemens representative.
Message
Please wait Mode change in progress or recipe function
started.
Ready for trans- Waiting for data from PU/PC
fer
Data transfer Data transfer between PU/PC and OP in prog-
ress
Firmware not The firmware can not be used for the current
compatible configuration
EPROM Memory module defective or internal hard-
memory failure ware fault
RAM memory
failure
Flash memory Memory module defective or transmission er-
failure ror
D-2
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again and then restart the OP and PLC again.
When doing so, please quote the number of the error that has occurred and
any variables referred to in the message.
Cause Remedy
Send unit for repair quoting details of error
message g
Retransfer configuration or send OP for repair
OP27, OP37 Equipment Manual
Release 05/99