
Functions
5.11 Operation in fieldbus systems
Frequency inverter
Operating Instructions, 08.10. 2008, t.b.d.
177
Message frame type Parameter
channel
(PKW)
parameter
data
Process data (PZD) - control and status words, actual values
PZD01
STW1
ZSW1
PZD02
HSW
HIW
PZD03 PZD04 PZD05
PZD06
PZD
07
PZD
08
<1> Placeholder for PCS7 process data
STW1/2
ZSW1/2
NSOLL_A
NIST_A_GLATT
IA_IST
MIST
PIST
M_LIM
FAULT_CODE
WARN_CODE
Control word 1/2
Status word 1/2
Speed or frequency setpoint
Smoothed speed or actual frequency value
Current output current
Current torque
Current active power
Toque limit value
Fault number
Alarm number
The following sections explain the content of this table in more detail.
Data structure of the parameter channel
Parameter channel
The parameter channel can be used to process and monitor process data (write/read) as
described below. The parameter channel always comprises four words.
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3:(
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ZRUG
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DQG
WK
ZRUG
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Figure 5-30 Structure of the parameter channel in the message frame structure