E.g.: Control Word Telegram Using Ppo Type 3 - Danfoss FC 300 Profibus Manual

FC 300 Profibus

E.g.: Control Word Telegram using PPO Type 3

This example shows how the control word telegram relates to the PLC and the FC 300, using FC Control
Profile.
The control word telegram is sent from the PLC to the FC 300. PPO Type 3 is used in the example in order
to demonstrate the full range of modules. All the values shown are arbitrary, and are provided for the
purposes of demonstration only.
PCA
PQW: 256
Bit no.: 15 14
0 0
0
The table above indicates the bits contained within the control word, and how they are presented as process
data in PPO type 3for this example.
The following table indicates which bit functions, and which corresponding bit values are active for this
example.
Bit Bit value = 0
00 Reference value
01 Reference value
02 DC brake
03 Coasting
04 Quick stop
05 Freeze output
06 Ramp stop
07 No function
08 No function
09 Ramp 1
10 Data not valid
11 No function
12 No function
13 Parameter set-up
14 Parameter set-up
15 No function
Function active
Function inactive
Application Examples
PCV
IND PVA
258 260 262
master → slave
13 12 11 10 9
0 0 0 1 0
4
Bit value = 1
External selection lsb
External selection msb
Enable
Ramp enable
Ramp 2
Relay 01 active
Relay 02 active
Selection lsb
Selection msb
Reversing
MG.33.C2.02 - VLT is a registered Danfoss trademark
1 2
CTW MRV
04 7C 20
264 266
CTW MRV
8 7 6 5
0 0 1 1
7
Bit value
0
0
Ramp 1
1
Ramp 1
1
Start 1
Reset 0
Jog 0
0
Valid 1
0
0
0
0
0
PCD
3 4 5
PCD PCD PCD
00
268 270 272
4 3 2 1 0
1 1 1 0 0
C
C
7
4
0
6
PCD
274
71