Communication / PROFIBUS 09.2008
6SE7087-6QX70 (Version AK) Siemens AG
8.2-108 Compendium Motion Control SIMOVERT MASTERDRIVES
x: Place-marker for encoder 1or 2 to control the encoder
functionality
Bit Value Meaning Comments
0
1
2
3
1
1
1
1
Function 1-4:
Request reference marks search (Bit 7 = 0)
Bit 0: Function 1 (Reference mark 1)
Bit 1: Function 2 (Reference mark 2)
Bit 2: Function 3 (Reference mark 3)
Bit 3: Function 4 (Reference mark 4)
Request flying measurement (Bit 7 = 1)
Bit 0: Function 1 (Scanner 1 pos. edge)
Bit 1: Function 2 (Scanner 1 neg. edge)
Bit 2: Function 3 (Scanner 2 pos. edge)
Bit 3: Function 4 (Scanner 2 neg. edge)
4-6 1-3
Command:
0: ----
1: Activate function x Bit 4=1
2: Read value x Bit 5=1
3: Terminate function x Bit4 and Bit5 =1
4-7: reserved
7 0 / 1
Functions:
Reference marks
Search
or
flying
measurement
Mode:
Bit 7 = 0: Reference marks search (zero mark or zero mark and
BERO)
Bit 7 = 1: Flying measurement (only BERO)
8 reserved
9 reserved
10 reserved
11 0 / 1
Reference point
mode
Reference point mode:
Bit 11 = 0: Set reference point
Bit 11 = 1: Shift reference point
12 1
Request to set /
shift reference
point
Request to set/shift reference point.
The setting or shift value can be adjusted according to the device.
Consideration in Gx_XIST1, Gx_XIST2
13 1
Request absolute
value cyclically
Request for additional cyclical transmission of the absolute position
actual value in Gx_XIST2.
Use e.g. for: - additional measuring system monitoring
- synchronization in run-up
Gx_STW
Encoder x-control word
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