9.3 Example: Status Word Telegram using Standard Telegram 1/PPO3
This example shows how the control word telegram relates to the PLC and the frequency converter, using FC Control
Profile.
The control word telegram is sent from the frequency converter to the controller. 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 3
STW MAV PCD PCD
0F 07 20 00
PIW: 256 258 260 262
STW MAV
Bit no.: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 0 0 0 1 0 0 0 1 1 1 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0
0 F 0 7 2 0 0 0
Table 9.5 PCD
Table 9.5 indicates the bits contained within the status word, and how they are presented as process data in Standard
Telegram 1 for this example.
Table 9.6 indicates which bit functions, and which corresponding bit values are active for this example.
Bit Bit value=0 Bit value=1 Bit value
00 Control not ready Control ready 1
7
01 Drive not ready Drive ready 1
02 Coasting Enable 1
03 No error Trip 0
04 No error Error (no trip) 0
0
05 Reserved - 0
06 No error Triplock 0
07 No warning Warning 0
08 Speed reference Speed#=#reference 1
F
09 Local operation Bus control 1
10 Outside frequency range Within frequency range 1
11 No operation In operation 1
12 Drive ok Stopped, autostart 0
0
13 Voltage ok Voltage exceeded 0
14 Torque ok Torque exceeded 0
15 Timers ok Timers exceeded 0
Function active
Function inactive
Table 9.6 Status Word Telegram using Standard Telegram 1/PPO3
Application Examples
Operating Instructions
MG90U302 Danfoss A/S © Rev. 2014-02-27 All rights reserved. 61
9 9
To Next Page
General
