Siemens SIMOTION ADI4 Manual page 40

Parameter assignment
3.4 PROFIBUS parameters
Encoder control word Gx_STW
Description of the encoder control word (extract) for:
● Find reference mark
● On-the-fly measurement
● Encoder error
Table 3- 2 Encoder control word Gx_STW (extract)
Bit Name
0
Find
reference
mark
1
or
Functions
On-the-fly
measurement
2
3
4
Command
5
6
7 Mode
:
15 Encoder error
40
Signal status, description
Find reference mark: Bit 7 = 0
Bit Meaning
0 Function 1:
1 Function 2:
2 Function 3:
3 Function 4:
On-the-fly measurement: Bit 7 = 1
Bit Meaning
0 Function 1:
1 Function 2:
2 Function 3:
3 Function 4:
Note
Bit 0 to 3
•
Bit x = 1 Function requested
Bit x = 0 Function not requested
If more than one function is enabled, the values for all functions cannot be read
•
until all functions have ended and this has been signaled via the relevant status
bit (G1_ZSW, Bit 0 - Bit 3 = 0).
On-the-fly measurement
•
The rising and falling edges of the measuring input can be enabled
simultaneously. The measuring input signal is detected according to the direction
of the signal change. The measured values are read out consecutively.
Notice
ADI4 only supports measurement on a rising or falling edge.
Find reference mark and on-the-fly measurement
•
Only one of the two functions can be active at a time.
Bit 6, 5, 4 Meaning
000 - -
001 Activate function x
010 Read value x
011 Cancel function x
0 Find reference mark
1 On-the-fly measurement
:
0 No error
1 Encoder error pending; error code in Gx_XIST2
Homing using:
Encoder zero mark (except in "611U conformant
mode")
Rising edge of external zero mark
Falling edge of external zero mark
Not used
Measuring using:
Measuring Input 1 rising edge
Measuring Input 1 falling edge
Measuring Input 2 rising edge
Measuring Input 2 falling edge
SIMOTION ADI4 - Analog Drive Interface for 4 Axes
Manual, 05/2009, 6FC5 297-0BA01-0BP6