Communication System Manual
3WN6 Circuit-Breakers
62
Copyright Siemens AG 1998. All rights reserved.
Version 1.0 (02/98)
3.5.2.4.2 Output data (from PROFIBUS to 3WN6)
The 6 words of input data are divided into the following data areas:
Octet 1
Parameter identifier
Octet 2
Profile control
Octet 3
Parameter subindex
for communication-capable
Octet 4
Reserved
low-voltage devices
Octet 5
on PROFIBUS-DP (kNS/DP)
Octet 6
Parameter value
Octet 7
Octet 8
Octet 9
High-order byte of main
control word
Direct control commands
Octet 10
Low-order byte of main
control word
See below
Octet 11
High-order byte of main
setpoint
Setting current Ir
Octet 12
Low-order byte of main
setpoint
The following functions are available in the main control word:
Octet 9: High-order byte of main control word
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
0
0
0
0
0
0
0
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COM_CLEAR bit
Octet 10: Low-order byte of main control word
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
0
0
0
0
0
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Switch 3WN6 ON
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Switch 3WN6 OFF
Not supported
General example:
Set the "z" release setting current to a value of 25 kA.
Enter the following codes in the input area (AW 0 - 6) of the DP/RS 485 interface (3WN6):
DW no.
Value
Meaning
AW 0
KF= +00782
"z" release setting current, parameter identifier
AW 2
KY= 005,000
Parameter subindex
AW 4
KY= 022,000
Integer data value, conversion factor
AW 6
KF= +25000
corresponds to 25 kA
and then enter the request identifier for transferring a value (A 0.4 & A 0.5 = 1, in AW = 0).