Siemens SIMATIC ET 200pro - STEP 7 Program Examples; Data Exchange Via the Fieldbus

Appendix
A.2 STEP 7 program examples
SIMATIC ET 200pro FC-2 converter
230 Operating Instructions, 04/2015, FW V4.7.3, A5E34257324B AB
A.2
STEP 7 program examples
A.2.1
Data exchange via the fieldbus
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- 1 Signal category and the associated scaling parameters
Signal category
4000 hex ≙ …
Speeds, frequencies
p2000
Voltage p2001
Current
p2002
Torque p2003
Power
r2004
Temperature
p2006
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.