AUMA AUMATIC AC 01.2 User Manual

Number of output bytesNumber of input bytes
432
832
1232
1632
2640
All these configurations (except 1 In, 1 Out) can be selected as consistent or
inconsistent.
The number of input bytes indicates how many of the maximum 40 bytes are sent
to the DP master by the DP slaves.
The number of output bytes states how many of the maximum of 26 bytes the DP
master sends to the DP slave.
If, for example, the configuration with 8 bytes input is selected, only the first 8 bytes
are sent from the DP slave to the DP master. In this case, the master does not have
access to bytes 9 to 40.This way, the DP master saves memory space since only
8 input bytes are reserved for the actuator.
The data of the AUMA actuators should be consistently processed by the DP master.
This ensures that the value of a 2-byte variable (position transmitter, analogue
customer input) does not change after reading out the first byte and, thus, does not
distort the value. If a master does not offer the possibility to use consistent
configurations by means of the process control system, a non-consistent configuration
can be selected.
3.5. Communication start-up
When switching on the DP master, it first sends one parameter and one configuration
telegram to each DP slave. If parameters and configuration are correct, the DP slave
enters the ‘Data Exchange’ mode to exchange process data between controls and
slave.Then, the DP master can control the DP slave and read its current state via
the process representation.
If communication is interrupted (e.g. when switching the slave off or in the event of
Profibus cable rupture), it is automatically resumed by the DP master once the cause
of the fault is eliminated.
3.6. AUMA user parameters (AUMA specific parameters)
The process representation input can be updated by means of the user parameters.
Default values and selection options are defined in a specific GSD file available on
request.
Two GSD files are available for AUMATIC AC 01.2/ACExC 01.2. A standard version
(AUMA04CF for ident-no. 0x0C4F) and an optional version with additional user
parameters for setting time stamp and alarms according to Profibus DP-V2
(AUMA0CBD for ident no. 0x0CBD).
3.6.1. Process representation input arrangement (user parameters)
The process representation input data can be arranged in any order. Arrangement
is defined by means of the user parameters in the GSD file, available on request.
Users may assign a specific indication to each Profibus DP signal.The data volume
of the transmitted data depends on the type of signals selected (u8, u16, i, individual
signals).
11
Actuator controls
AC 01.2/ACExC 01.2 Profibus DP Commissioning

AUMA AUMATIC AC 01.2 Specifications

General

Brand	AUMA
Model	AUMATIC AC 01.2
Category	Controller
Language	English