Siemens SINAMICS G110M - Dual Slave Mode

Configure fieldbus
7.5 Communications via AS-i
SINAMICS G110M Operating Instructions
Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
151
7.5.3
Dual slave mode
In Dual Slave mode, eight bits are available for the communication between the AS-i master
and the inverter. The eight bits are used to transfer process data. In parallel, the control can
start a diagnostic request via AS-i.P0.
The following default settings are possible:
● Default setting 31: Dual Slave mode with fixed setpoints
● Default setting 34: Dual Slave mode with setpoint via AS-i field bus
Default setting 31: Dual Slave mode with fixed setpoints
The control accesses the two slaves of the inverter each via four bits.
Via slave 2, in accordance with profile 7.A.E, the control specifies the speed setpoint via the
motor control bits (AS-i.DO0 … AS-i.DO2).
Via slave 1, the control sends data in cyclical or acyclical mode, in accordance with profile
7.A.5.
The control requires one bit per slave in order to specify the slave.
Default setting 31, slave 2 with profile 7.A.E: Control -> inverter
•
AS-i.DO0
-
>
p1020.0 = 2093.0
Fixed speed bit 0
•
AS-i.DO1
-
>
p1021.0 = 209
3.1
Fixed speed bit 1
•
AS-i.DO2
-
>
p1022.0 = 2093.2
Fixed speed bit 2
•
AS-i.DO3
-
>
Select slave A or slave B, interconnected internally
For details, see AS-i System Interface Manual
(https://support.industry.siemens.com/cs/gb/en/view/1171856).
If the control specifies the speed setpoint, the inverter replies:
Default setting 31, slave 2 with profile 7.A.E: Inverter -> control
•
p2080[0] = 53.13
PLC ready to switch on
-
>
AS
-i.DI0
•
p2080[1] = 899.11
Pulses enabled
-
>
AS
-i.DI1
•
p2080[2] = 722.0
State DI0
-
>
AS
-i.DI2
•
p2080[3] = 722.1
State DI1
-
>
AS
-i.DI3
If the control sends a diagnostic request via AS-i.P0, the inverter replies with the currently
pending fault or alarm messages.
For details, see AS-i System Interface Manual
(https://support.industry.siemens.com/cs/gb/en/view/1171856).
Default setting 31, slave 1 with profile 7.A.5: Control -> inverter
•
AS-i.DO0
-
>
Time signal for the CTT2 transfer from the AS
-i master