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6.5
Programming the Address in Case of Configuration Errors
6.5.1
Automatic Address Assignment
For automatic programming to work, some requirements must be met:
1.The AS-i master must be in the protected operating mode.
2.The "Auto_Address_Assign"
3.Only one of the projected slaves may not be detected.
If these requirements are met, the AS-i master's "prg enable" LED lights up and
a slave with address zero will be automatically assigned to the operating address
of the missing slave. The "Automatic Address Assignment" can be activated and
deactivated via the software "AS-i Control Tools". .
6.5.2
Manual Address Assignment
In protected operating mode, wrong assignments are displayed as errors (see
chapter 6.3). By pressing the "set" button, you can display all faulty assignments
one after the other. By pressing the "set" button for more than five seconds, you
can select the currently displayed address as a potential target address, and the
display starts to blink.
If the faulty slave was previously replaced by a slave with address zero, the new
slave can now be programmed for the blinking address by pressing the "set" key
again. As a requirement, the new slave's configuration data must match the con-
figuration data for the blinking address.
1. By deletion of flag "Auto_prog" the user can close "automatic addressing".
Subject to reasonable modifications due to technical advances.
20
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Operating the AS-i/CC-Link Gateway
One of AS-i's great advantages is the automatic address assign-
ment. If a slave fails, it can be replaced by one of the same type with
address zero. The master will detect the replacement and automati-
cally addresses the new slave with the address of the faulty one.
If the two slaves have different configuration data, i.e. are not of the
same type as far as AS-i is concerned, the automatic address
assignment will not be carried out.
Only slaves with address 0 can get a new address by the master.
If several slaves fail, they cannot be replaced automatically by the
AS-i master. Then these addresses have to be set manually. If this
should not be done via the host interface or with a hand held
addressing device, the slave addresses can also be changed with
the help of the push buttons and the figure display of the device.
1
release flag must be set.
AS-Interface
Copyright Pepperl+Fuchs, Printed in Germany
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