Control functions
7.8 Communicating with the PLC
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2019, A5E36037884-007
279
Bit
S control mode
T control mode
Signals
Description
Signals
Description
6
Reserved
-
Reserved
-
7
RESET
Reset faults
RESET
Reset faults
8
Reserved
-
Reserved
-
9
Reserved
-
Reserved
-
10
PLC
Enable master control from the PLC
PLC
Enable master control from the PLC
11
Rev
Direction of rotation reversal
Reserved
-
12
Reserved
-
Reserved
-
13
Reserved
-
Reserved
-
14
Reserved
-
Reserved
-
15
Reserved
-
Reserved
-
Note
The following signals are occupied by Modbus control word when you use the setpoint and
control word from Modbus as the Modbus control source (p29008 = 1). They can only be
enabled by Modbus control word while cannot be enabled by external DI terminals.
•
PTI/Fast PTI control mode: SON
•
IPos control mode: SON, SREF (REF for reference mode 0)
•
S control mode: SON, CWE/CCWE
•
T control mode: SON
Note
In IPos control mode, when the relative positioning mode is selected, the method for
accepting MDI setpoint must be a rising edge (bit 5 = 0); otherwise, fault F7488 occurs.
Note
In IPos control mode, when you implement the absolute positioning for the modular axis with
Modbus, you can select the MDI direction with parameter p29230.
Note
In T control mode, the motor cannot be stopped with OFF1 via Modbus.
Note
All the reserved bits in register 40100 must be set to 0.