Siemens SINAMICS G110D Operating Instructions Manual page 172

Functions
6.11 Operation in fieldbus systems
Addressing by parameter
The AS-i address of the two slaves in the Inverter are held in parameter P2021 using an
index. Index 0 (P2021[0]) holds the address of Slave 1 and Index 1 (P2021[1]) holds the
address of Slave 2. Parameter P2021 can take any value in the ranges 0 ... 31 for A slaves
and 33 ... 63 for the B slaves.
When deciding addresses for the slaves the following points should be taken in account:
● Except for the special case of address '0', the two slaves must be assigned different
addresses.
● If either slave is set to address '0' then both slaves will be set to address '0' and Slave 2
will become hidden from the AS-i network.
A summary of parameter P2021 values and conditions are given in the table below.
Table 6- 56 Summary of parameter P2021 settings
Parameter Description
Dual slave mode
P2021[0] Address for slave 1, profile 7.A.5. Addresses available: 0...31 for A address, 33...63 for B addresses.
P2021[1] Address for slave 2, profile 7.A.E. Addresses available: 0...31 for A address, 33...63 for B addresses.
Single slave mode
P2021[1] Address for slave 2, profile 7.F.E. Addresses available: 0...31 A address
Note: after this parameter is changed, the Inverter will perform an AS-i reset in order to load the new addresses.
ID1 Code
The ID1 code according to the AS-i profile has no specific meaning and therefore can be
modified by the user. Its purpose in the context of the Inverter, is to allow a unique number to
be assigned to individual slave nodes on the AS-i bus. This function is useful, for example,
when the AS-i master displays fault conditions for a specific slave node, its unique ID1 code
can be used to physically identify the slave.
In single slave mode, there is one unique ID1 code for the Inverter; in dual slave mode, two
unique numbers can be assigned to each logical slave node in the Inverter.
The ID1 code can be modified using parameter P2023. The settings and ranges of values for
P2023 are given in the table below.
Table 6- 57 ID1 Code modification (P2023)
Slave mode
Single slave without extended addressing
Dual slave 1 with extended addressing
Dual slave 2 with extended addressing
172
Parameter.index Default value
P2023.1 15
P2023.0 7
P2023.1 7
Operating Instructions, 07/2016, FW V3.63, A5E36768472B AB
Permissible range
0...15
0...7
0...7
SINAMICS G110D