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
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