7 application examples, 1 e.g.: process data with ppo type 6 – GE Industrial Solutions AF-600 FP Profibus DP User Manual
Page 68
7 Application Examples
7.1 E.g.: Process Data with PPO Type 6
This example shows how to work with PPO type 6, which consists of Control Word/Status Word and Reference/Main Actual Value. The PPO also has two additional
words, which can be programmed to monitor process signals:
PCV
PCD
1
2
3
4
5
6
7
8
9
10
PCA
IND
PVA
CTW
MRV
PCD
PCD
PCD
PCD
PCD
PCD
PCD
PCD
STW
MAV
Byte no.
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
Type 6:
The application requires monitoring of the motor torque and digital input, so PCD 3 is set up to read the current motor torque. PCD 4 is set up to monitor the state
of an external sensor via the process signal digital input. The sensor is connected to digital input 18.
An external device is also controlled via control word bit 11 and the built-in relay of the frequency converter. Reversing is permitted only when the reversing bit
15 in the control word and the digital input 19 are set to high.
For safety reasons the frequency converter will stop the motor if the PROFIBUS cable is broken, the master has a system failure, or the PLC is in stop mode.
Program the frequency converter as follows:
AF-650 GP/AF-600 FP Profibus DP Operating Instructions
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