Cyclic Communication - Siemens SINAMICS G120 CU230P-2 HVAC Operating Instructions Manual

6.1.4

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- 3 Inverter telegram types
Telegram type (p0922)
Telegram 1
Speed control
PZD 2/2
Telegram 20
Speed control, VIK/NAMUR
PZD 2/6
Telegram 350
Speed control
PZD 4/4
Telegram 352
Speed control, PCS7
PZD 6/6
Telegram 353
Speed control,
PKW 4/4 and PZD 2/2
Telegram 354
Speed control,
PKW 4/4 and PZD 6/6
Telegram 999
Free interconnection via BICO
PZD n/m (n,m = 1 ... 8)
Table 6- 4 Explanation of the abbreviations
Abbreviation Significance
STW1/2 Control word 1/2
ZSW1/2 Status word 1/2
NSOLL_A Speed setpoint
NIST_A_GLATT Smoothed speed actual value
IAIST_GLATT Smoothed actual current value
MIST_GLATT Actual torque
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Process data (PZD) - control and status words, setpoints and actual values
PZD01 PZD02 PZD03
STW1 HSW
ZSW1 HIW
STW1 NSOLL_A ⇐ The inverter receives this data from the control
ZSW1 NIST_A ⇒ The inverter sends this data to the control
STW1 NSOLL_A
ZSW1 NIST_A_ IAIST_
GLATT GLATT
STW1 NSOLL_A M_LIM
ZSW1 NIST_A_ IAIST_
GLATT GLATT
STW1 NSOLL_A
ZSW1 NIST_A_ IAIST_
GLATT GLATT
STW1 NSOLL_A
ZSW1 NIST_A_
GLATT
STW1 NSOLL_A
ZSW1 NIST_A_ IAIST_
GLATT GLATT
STW1 Telegram length on receipt can be configured up to max. 8 words
ZSW1 Telegram length on transmission can be configured up to max. 8 words
6.1 Communication via PROFIBUS
PZD04 PZD05
MIST_ PIST_
GLATT GLATT
STW3
ZSW3
PCS7 process data
MIST_ WARN_
GLATT CODE
PCS7 process data
MIST_ WARN_
GLATT CODE
Abbreviation Significance
PIST_GLATT Actual active power
MELD_NAMUR Control word according to the VIK-
NAMUR definition
M_LIM Torque limit value
FAULT_CODE Fault number
WARN_CODE Alarm number
Configuring the fieldbus
PZD06 PZD07 PZD08
MELD_
NAMUR
FAULT_
CODE
FAULT_
CODE
101