Siemens SIMATIC NET IE/AS-INTERFACE LINK PN IO, Руководство пользователя

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8 Using the Data Record Interface
142
IE/AS − INTERFACE LINK PN IO
as of hardware version 1, as of firmware version V2.0
Release 08/2018
C79000 − G8976 − C216 − 03
8.2.1.9 Change_Slave_Address
Meaning
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, then no other AS-i slave with
address 0 can 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.
Structure of the RecordDataWrite service − Index 20
Byte Meaning
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Version_hi = 0x00
1 Version_lo = 0x00
2 AS-i address old
3 AS-i address new