Example: Status Word Telegram Using Standard Telegram 1/Ppo3 - Danfoss VLT Profinet MCA 120 Operating Instructions Manual

Application Examples

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
STW MAV PCD
0F 07 20 00
PIW: 256 258 260
STW MAV
Bit no.: 31 30 29 28 27 26
0 0 0 0 0 1
0 F
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
00 Control not ready
01 Drive not ready
02 Coasting
03 No error
04 No error
05 Reserved
06 No error
07 No warning
08 Speed reference
09 Local operation
10 Outside frequency range
11 No operation
12 Drive ok
13 Voltage ok
14 Torque ok
15 Timers ok
Function active
Function inactive
Table 9.6 Status Word Telegram using Standard Telegram 1/PPO3
MG90U302
Operating Instructions
3
PCD
262
25 24 23 22 21 20 19 18
0 0 0 1 1 1 1 1
0 7
Bit value=1
Control ready
Drive ready
Enable
Trip
Error (no trip)
-
Triplock
Warning
Speed#=#reference
Bus control
Within frequency range
In operation
Stopped, autostart
Voltage exceeded
Torque exceeded
Timers exceeded
Danfoss A/S © Rev. 2014-02-27 All rights reserved.
17 16 15 14 13 12 11 10
0 0 0 0 1 0 0 0
2 0
Bit value
1
1
1
0
0
0
0
0
1
1
1
1
0
0
0
0
9 8 7 6 5 4 3 2
0 0 0 0 0 0 0 0
0 0
7
0
F
0
1 0
0 0
9 9
61