Pepperl+Fuchs AS-I 3.0, Manual

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89
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s
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d
a
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7
.6
.2
0
1
3
AS-i 3.0 Command Interface
Commands of the Command Interface
4.6.15 Change slave address (SLAVE_ADDR)
With this call, the AS-i address of an AS-i slave can be modified.
This call is mainly used to add a new AS-i slave with the default address "0" to the
AS-Interface. In this case, the address is changed from "AS-i slave address
old" = 0 to "AS-i slave address new”.
This change can only be made when the following conditions are fulfilled:
1. An AS-i slave with “AS-i slave address old” exists.
2. If the old AS-i slave address is not equal to 0, an AS-i slave with address "0"
cannot be connected at the same time.
3. The "AS-i slave address new" must have a valid value.
4. An AS-i slave with "AS-i slave address new" must not exist.
Information!
When the AS-i slave address is changed, the AS-i slave is not reset, in other words,
the output data of the AS-i slave are retained until new data are received at the new
address.
Request
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 0D
16
2 T – circuit
3 – B source address
4 – B target address
Tab. 4-164.
Response
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 0D
16
2 T result
Tab. 4-165.
Meaning of bit B:
B = 0
Single AS-i slave or A-slave
B = 1 B-slave