Siemens SINAMICS G110D Operating Instructions Manual page 147

Auto addressing
Both slaves within the Inverter have the normal AS-i default address of '0'. When connected
to the AS-i bus slave 1 will be visible to the AS-i master. This allows the master to find the
Slave 1 and assign it an appropriate AS-i node ID on the connection AS-i network. When
Slave 1 has been assigned an address, Slave 2 becomes visible to the AS-i network and can
then be automatically assigned a node ID by the AS-i master.
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 ... 62 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
● If either slave is set to address '0' then both slaves will be set to address '0' and Slave 2
Programmable process images
It is possible, using BICO, to change the functionality of both input and output process
images, with the exception of the CTT2 serial channel present in Slave 1. This serial channel
is required to be present in order that Slave 1 appears correctly on the AS-i network. The
default settings for both slaves are given in the table below.
Table 6- 54 Default input process image (slave to master)
Bit Usage
Slave 2
DI0 Ready
DI1 Motor active
DI2 Digital input 1
DI3 Digital input 2
Slave 1
DI0 Digital input 3
DI1 Digital input 4
DI2 Serial clock in
DI3 Serial data in
SINAMICS G110D
Operating Instructions, 2009-05-15, A5E02385577A AB
addresses.
will become hidden from the AS-i network.
Description
0: Inverter is not responsive to AS-i master
1: Inverter is ready to respond to commands from the AS-i master
0: Inverter motor outputs are high impedance
1: Inverter motor outputs are active
0: Input 1 is inactive
1: Input 1 is active
0: Input 2 is inactive
1: Input 2 is active
0: Input 3 is inactive
1: Input 3 is active
0: Input 4 is inactive
1: Input 4 is active
Clock signal for CTT2 data transfer to AS-i master
Data signal for CTT2 data transfer to AS-i master
6.11 Operation in fieldbus systems
Functions
147