611U Conformant Mode - Siemens SIMOTION ADI4 Manual

3.5.7

611U conformant mode

Possible settings
In 611U conformant mode, the signal source for homing of axes is no longer specified using
the PROFIDrive standard message frame (STD3, encoder control word G1_STW), but rather
using the additional digital output word in the PROFIBUS message frame of the ADI4 (see
table "Message frame structure" in Section "Message frame type (Page 37)").
611U conformant mode:
● Not selected
● Selected
Digital output word
The signal sources for the homing are selected on an axis-specific basis via the following
bits of the output word (see also output word in the table "Message frame structure" in
Section "Message frame type"):
Table 3- 4
Bit
8
9
10
11
If the 611U conformant mode has been assigned for an axis to be homed, the axis-specific
signal for selection of the signal source must be set in the digital output word of the ADI4
from the PLC user program. This must take place prior to the request of the "Find reference
mark" function in the control word.
Note
With 611U conformant mode
• For homing of an axis using an encoder zero mark and an external zero mark, the
• The signal source for homing can be switched during operation.
Without 611U conformant mode
• Homing is always performed in relation to the zero mark of the axis.
SIMOTION ADI4 - Analog Drive Interface for 4 Axes
Manual, 05/2009, 6FC5 297-0BA01-0BP6
The signal source for homing is specified via the encoder control word Gx_STW in the
PROFIDrive standard message frame.
The signal source for homing is specified via the additional digital output word in the
PROFIBUS message frame.
Output word: signal sources for homing
Value Signal source for homing
0 Axis 1: Zero mark of Encoder 1 (X4-1)
1 Axis 1: Rising edge of External zero mark 1 (X6-2, Pin 2)
0 Axis 2: Zero mark of Encoder 2 (X4-2)
1 Axis 2: Rising edge of External zero mark 2 (X6-2, Pin 3)
0 Axis 3: Zero mark of Encoder 3 (X4-3)
1 Axis 3: Rising edge of External zero mark 3 (X6-2, Pin 4)
0 Axis 4: Zero mark of Encoder 4 (X4-4)
1 Axis 4: Rising edge of External zero mark 4 (X6-2, Pin 5)
appropriate axis-specific bit must be set to 0 (encoder zero mark) in the digital output
word by the PLC user program.
Parameter assignment
3.5 Function parameters
49