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Connection to a fieldbus
6.3 Communication via PROFIBUS
Inverter with CU240B-2 and CU240E-2 Control Units
112
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA
6.3.3
Cyclic communication
The PROFIdrive profile defines different telegram types. Telegrams contain the data for
cyclic communication with a defined meaning and sequence. The inverter has the telegram
types listed in the table below.
Table 6- 6
Inverter telegram types
Telegram type (p0922)
Process data (PZD) - control and status words, setpoints and actual values
PZD01
STW1
ZSW1
PZD02
HSW
HIW
PZD03
PZD04
PZD05
PZD06
PZD
07
PZD
08
STW1
NSOLL_A
⇐ The inverter receives this data from the control
Telegram 1
Speed control
PZD 2/2
ZSW1
NIST_A
⇒ The inverter sends this data to the control
STW1
NSOLL_A
Telegram 20
Speed control, VIK/NAMUR
PZD 2/6
ZSW1
NIST_A_
GLATT
IAIST_
GLATT
MIST_
GLATT
PIST_
GLATT
MELD_
NAMUR
STW1
NSOLL_A
M_LIM
STW3
Telegram 350
Speed control
PZD 4/4
ZSW1
NIST_A_
GLATT
IAIST_
GLATT
ZSW3
STW1
NSOLL_A
PCS7 process data
Telegram 352
Speed control, PCS7
PZD 6/6
ZSW1
NIST_A_
GLATT
IAIST_
GLATT
MIST_
GLATT
WARN_
CODE
FAULT_
CODE
STW1
NSOLL_A
Telegram 353
Speed control,
PKW 4/4 and PZD 2/2
ZSW1
NIST_A_
GLATT
STW1
NSOLL_A
PCS7 process data
Telegram 354
Speed control,
PKW 4/4 and PZD 6/6
ZSW1
NIST_A_
GLATT
IAIST_
GLATT
MIST_
GLATT
WARN_
CODE
FAULT_
CODE
STW1
Telegram length on receipt can be configured up to max. 8 words
Telegram 999
Free interconnection via BICO
PZD n/m (n,m = 1 … 8)
ZSW1
Telegram length on transmission can be configured up to max. 8 words
Table 6- 7
Explanation of the abbreviations
Abbreviation
Significance
Abbreviation
Significance
STW1/2
Control word 1/2
PIST_GLATT
Actual active power
ZSW1/2
Status word 1/2
MELD_NAMUR
Control word according to the VIK-
NAMUR definition
NSOLL_A
Speed setpoint
M_LIM
Torque limit value
NIST_A_GLATT
Smoothed speed actual value
FAULT_CODE
Fault number
IAIST_GLATT
Smoothed actual current value
WARN_CODE
Alarm number
MIST_GLATT
Actual torque