Pepperl+Fuchs VBG-PB-K25 - Read Output Data Image (READ_ODI); Change Slave Address (SLAVE_ADDR)

AS-i/PROFIBUS Gateway
Command Interface
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group · Tel.: Germany (6 21) 7 76-0 · USA (3 30) 4 25 35 55 · Singapore 7 79 90 91 · Internet http://www.pepperl-fuchs.com
Issue date - 21.12.2005
69
8.2.5.5 Read Output Data Image (READ_ODI)
With this call, the output data values of all AS-i slaves is being read out of the AS-i/
PROFIBUS gateway.
8.2.5.6 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.
Response
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 42
16
2 T result
Request
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 56
16
2 T – circuit
Response
byte
2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1 56
16
2 T result
3 – slave 1A
slave 2A slave 3A
… …
34 slave 30B slave 31B
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.