Step 7 Program Examples; Data Exchange Via The Fieldbus - Cu230 - Siemens SINAMICS G120 Original Instructions Manual

Appendix
A.7 Application examples
A.7.3

STEP 7 program examples

A.7.3.1

Data exchange via the fieldbus - CU230

Data exchange via the fieldbus
Analog signals
The inverter always scales signals that are transferred via the fieldbus to a value of 4000
hex.
Table A- 10
Signal category
Speeds, frequencies
Voltage
Current
Torque
Control and status words
Control and status words consist of a high byte and a low byte. A SIMATIC control interprets
words differently than the inverter: The higher and lower-order bytes are interchanged when
they are transferred. See also the following program example.
438
Signal category and the associated scaling parameters
4000 hex ≙ ...
p2000
p2001
p2002
p2003
Signal category
Power
Angle
Temperature
Inverter with CU230P-2 Control Units
Operating Instructions, 11/2013, FW V4.6.6, A5E02430659B AG
4000 hex ≙ ...
p2004
p2005
p2006