Example: Control Word Telegram Using Standard Telegram 1/Ppo3 - Danfoss VLT AutomationDrive FC 360 Programming Manual

Application Examples

7.2 Example: Control Word Telegram Using Standard Telegram 1/PPO3

This example shows how the control word telegram relates to the controller and the frequency converter, using FC control
profile.
The control word telegram is sent from the PLC to the frequency converter. Standard telegram 1 is used in the example to
demonstrate the full range of modules. All the values shown are arbitrary and are provided for demonstration purposes
only.
0 1 2
CTW MRV PCD
04 7C 20 00
PQW: 256 258 260
CTW MRV
Bit no.: 31 30 29 28 27 26
0 0 0 0 0 1
0 4
Table 7.3 PCD
Table 7.3 indicates the bits contained within the control word and how they are presented as process data in standard
telegram 1 in this example.
Table 7.4 indicates which bit functions and which corresponding bit values are active in 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
Table 7.4 Control Word Telegram Using Standard Telegram 1/PPO3
MG06G102
Programming Guide
3
PCD
262
25 24 23 22 21 20 19 18
0 0 0 1 1 1 1 1
7 C
Bit value = 1
External selection lsb
External selection msb
Ramp enable
Relay 01 active
Relay 02 active
Selection lsb
Selection msb
Reversing
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17 16 15 14 13 12 11 10
0 0 0 0 1 0 0 0
2 0
Ramp
Enable
Ramp
Start
Reset
Jog
Ramp 2
Valid
–
–
9 8 7 6 5 4 3 2
0 0 0 0 0 0 0 0
0 0
Bit value
0
0
C
1
1
1
1
7
1
0
0
0
4
1
0
0
0
0
0
0
– –
– –
1 0
0 0
7 7
41