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CPU 412, 414, 416, 417
Remedy: Carry out a memory reset for all CPUs. Then download each CPU with their system
data (or all blocks) one after the other to the Simatic Manager. Start with the CPU with the
highest CPU number and always continue with the CPU with the next smallest CPU number.
Then, switch the CPUs to RUN mode keeping to the same sequence.
Configuring Modules which are Addressed in the I/O Address Area
Always configure modules which are addressed in the I/O address area so that they lie either
completely within or outside the process image area. Consistency cannot otherwise be
guaranteed and incorrect data could result.
I/O Access Error DP
If an access error for existing modules occurs without apparent reason (error free station), the
cause may be that the parameter for monitoring time is too short.
I/O Access via Word and Double Word Commands
With I/O access via word or double word commands, if the first byte or the first one to three
bytes exist but the rest of the addressed area does not, accumulator "0" is loaded.
I/O Access via Word and Double Word Commands
With I/O access via word or double word commands, if the first byte or the first one to three
bytes exist but the rest of the addressed area does not, accumulator "0" is loaded.
Using the Modules 6ES7 467-5GJ00-0AB0 / 6ES7 467-5GJ01-0AB0 /
6GK7 443-5DX00-0XE0 / 6GK7 443-5DX01-0XE0
When these modules with firmware version V1.21 or lower are used a complete (cold) restart of
the CPU must not be executed.
Using the SFBs 52 to 54 with an External DP Interface Module
If you are using the SFBs 52 "RDREC", 53 "WRREC" or 54 "RALRM" with the intention to
access DP slaves via an external DP interface module, observe the following: Only when you
are using a CP443-5 ext. with the order number 6GK7 443-5DX03-0XE0 as of firmware version
V4.0.0 as an external DP interface module, the specified SFBs have the functionality described
in the online help and in the electronic manual.
Forcing Variables
It is not permitted to force variables which lie in the I/O or process image range of a DP
standard slave and belong to a consistency range, as the user program can overwrite these
variables in spite of a force job.
Assigning double message numbers
You can assign EV_ID and R_ID for the interrupt and notify blocks (SFB 31 and 33 – 36) and
for the send /receive blocks USEND/URCV (SFB 8, 9) and BSEND/BRCV (SFB 12, 13)
respectively.
Make sure each EV_ID or R_ID is used only once in your user program. It is absolutely neces-
sary that you evaluate the Error and Status parameters. Error = 1 and Status = 18 notifies you
that an error has occurred and that a EV–ID or R_ID has been assigned twice.
Double assignments of EV_ID or R_ID will prevent your program from being edited correctly.
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