Siemens MICROMASTER 420 - Page 53

,QWHUQDWLRQDO(QJOLVK &20081,&$7,216
MICROMASTER 420 Reference Manual
Issue A1
45

QG
:RUG

QG
:RUG%LW ,1' 3DUDPHWHULQGH[
Bits15 14 13 12
(2
0
2
3
2
2
2
1
)
PNU extension (PNU page). See below.
Bit 11-10 Reserved. Not used.
Bits09-08 Selected the text type + read or write text. Not used.
Bits07-00 Index (which element):
Which parameter value.
Which description element.
Which index text are meaning.
Which value text are meaning.
The value 255 = All values of
an index parameter or all
elements of the parameter
description. This is only
possible when P2013 =127.
The complete parameter number is generated from the basis parameter number in
the parameter task / reply ID (bits 0 -10) and the bits 12-15 in the index (PNU
page).
%DVLV318LQWKHWDVNUHSO\,'
ELWV
318SDJHLQWKHLQGH[
ELWV
&RPSOHWH318
EDVLV318318SDJH
0 ... 1999 0 0 ... 1999
0 ... 1999 1 2000 ... 3999
0 ... 1999 2 4000 ... 5999
0 ... 1999 3 6000 ... 3999
0 ... 1999 4 8000 ... 9999
.... ... ...
0 ... 1999 15 30000 ... 31999
1RWH
Bit 15 has the weighting 2
0
so that this bit must be set for parameter numbers 2000
to 3999. MICROMASTER 420 does not have parameter numbers greater than
3999.
The 3
rd
and 4
th
words, PWE1 and PWE2 contain the parameter value for the
parameter being accessed. There are a number of different parameter value types
on MICROMASTER 420; integer values (single or double words), decimal values
(given in IEEE float values, always double words) and indexed parameters
(referred to here as array values). The meaning of the parameter value is
dependent on the parameter value type (middle column) and the setting of P2013
(right hand column).

UG
:RUG

UG
:RUG%LW 3:( 
VW
SDUDPHWHUYDOXH
Bits15 - 0 = Parameter value for non array parameter.
= n
th
parameter value for array parameter and task for
n
th
element.
When value of P2013
= 3 (fixed) or
= 127 (variable length)
and single word parameter.
= 1
st
parameter value for array parameter and task for
all elements.
When value of P2013
= 127 (variable length)
and single word parameter.
= 0.
When value of P2013
= 4 (fixed)
and single word parameter.
= High word of parameter value (non array).
= High word of n
th
parameter value for array
parameter and task for n
th
element.
When value of P2013
= 4 (fixed) or
= 127 (variable length)
and double word parameter.
= High word of 1
st
parameter value for array
parameter and task for all elements.
When value of P2013
= 127 (variable length)
and double word parameter.
Error value. Slave
Å
Master and replay ID =
Task cannot be executed.