AUMA AUMATIC ACExC 01.2 User Manual

Figure 4: Configuration type for Profibus DP-V2
Setting the bus address (slave address)
Each channel has its own address. After setting the primary address, the backup
automatically accepts the address of the primary plus a configurable offset (either 0
or 64).
Startup behaviour
The channels automatically change between the startup_primary and startup_waiting
states until the master starts the communication with the actuator. In the
startup_primary state, the actuator waits with the primary slave address for the master
to start the communication.The cycle starts with 2 s, this time is doubled after each
cycle to max. 32 s.
Change over
The actuator does not decide autonomously on change-over.The master detects a
loss of communication of the primary channel and may initiate change-over using a
parameter telegram (parameter command PrmCmd).The former backup channel
becomes the new primary channel.
Parameter command
Apart from the change-over commands, different parameters for the configuration
of the Profibus DP-V2 redundancy are transmitted using the PrmCmd parameter
command.
For Profibus DP-V2, the parameter command is part of the parameter telegram which
is sent to the actuator on startup of the communication.
Table 33: Structure of the PrmCmd parameter command
RemarkBitByte
01234567
Block length (= 0x08)000100001
Structure type (= 0x02,
PrmCmd parameter
command for DP-V2
redundancy
010000002
Slot000000003
SpecifierReservedSequence number4
45
Actuator controls
AC 01.2/ACExC 01.2 Profibus DP Description of the data interface

AUMA AUMATIC ACExC 01.2 Specifications

General

Brand	AUMA
Model	AUMATIC ACExC 01.2
Category	Controller
Language	English