Parameterassignment - Siemens SIMATIC S5 Equipment Manual

Programming Instructions
9.4.4 Parameter Assignment
DBDW : ~ =
X, y x =
Y
PAFE : In case of illegal parameterization, the signal status is"1". The recognized error is
then shown by the assignment of flag byte FY 255.
F 255.0 SP bit error is set when the SP bit is not reset by the module within a
certain period of time after an access.
F 255.1 Data word DR 182 or DR 184 of the "number" parameter to be trans–
ferred when the "PR" or "MB" command is selected is outside the
range from O to 15 or the channel number in data word DL 182 or
DL 184 is not zero or 16 for channel 1 or 2 respectively.
F 255.2 The specified user data block number is zero or one.
(One for PLCS S5-135U and S5-155U only)
F 255.3 The specified working data block or user data block does not exist or is
too short.
The command in data word DW n of the working data block cannot be
F 255.4
interpreted.
F 255.5 The ABIT parameter in data word DW n+7 of the working data block is
outside the specified range.
(Not assigned for PLCSS5-115U and S5-135U)
F 255.6 The track number is outside the specified range.
(Data word DL n+l of the working data block)
F 255.7 The specified user data block has no parameterization identifier
(is entered by FB 156).
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Number of the working data block
1<
X <255
2< x <255 forPLCSS5–135U and S5– 155U
=
When the user data block and the working data block are identical,
the first data word used of the working data block must be equal to
or greater than data word DW 187.
word (DW n) used