Programming Instructions
R 02/92
9.5.5 Cyclic Operation
During cyclic operation, input 15.6 in the organization block can be used to choose between indi-
rect
parameterization
(15.6 = “O”) and direct
parameterization
(15.6 =”1 “). Function block FB 11 is
called for indirect
parameterization
and program block PB 11 for direct
parameterization.
The “parameterization error” bit in the ‘
(
PAFE” parameter is set if the parameters are modified in-
correctly when function block FB 157 is called. The same applies when working data block DB 158
is supplied with incorrect entries before function block FB 158 is called. In both cases, this
parame-
trization
error is indicated by the set output Q 4.6/Q 8.6.
Direct parameterization (PB 11)
A bit in flag byte FY 17 or FY 35 with signal status”1” indicates the call during which the error oc-
curred (see program block PB 11). The detected error can then be read by the assignment of the
applicable flag bytes
(FY
20 to FY 31).
The SP bit errors occurring during the cycle are imaged in flag bytes FY 16 and FY 34
(SPFE
para-
meter). Output Q 4.7 (Q 8.7) is set as the group signal when an error occurs here.
Indirect parameterization
(FB
11)
When a
parameterization
error occurs, the cause of the error can be read in flag byte FY 20 (image
of flag byte FY 255).
An SP bit error can be recognized by the set output Q 4.7/Q 4.8 in flag bit F 20.0 which has signal
status”1”.
9 – 50
1P
241 Equipment Manual
@
Siemens
AG
1989, Order No.: 6ES5
998-0KD21
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