Lika EMC58 MT, Руководство пользователя

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EM58 – HS58 - HM58 MODBUS TCP/IP
and perform the preset operation (bit 11
Perform counting preset
in the
Control Word [111-112]
registers = 1).
EXAMPLE
We install the HM58 16 / 16384 MT multiturn encoder.
Its physical resolution is as follows (see the order code):

Hardware counts per revolution:
Singleturn resolution [113-114]
=
65,536 (2 16 )
 Hardware number of revolutions:
Number of revolutions [115-116]
=
16,384 (2 14 )
 Total hardware resolution: Singleturn resolution [113-114]
*
Number of revolutions [115-116]
= 1,073,741,824 (2
30
)
In the specific installation 2,048 counts/rev.

1,024 turns are required:
 Enable the scaling function:
Operating parameters [109-110]
, bit 0
Scaling function
= “1”
 Counts per revolution: Counts per revolution [101-102] = 2,048 (0000
0800 hex)
 Total resolution:
Total Resolution [103-104]
= 2048

1024 =
2,097,152 (0020 0000 hex)
NOTE
We suggest setting values which are a power of 2 (2 n : 2, 4, …, 2048, 4096, 8192,
…) to be set in the Counts per revolution [101-102] and Total Resolution
[103-104]
registers to avoid counting errors.
WARNING
If
Counts per revolution [101-102]
and/or
Total Resolution [103-104]
values change, the
Preset value [105-106]
must be updated in accordance
with the new resolution. A new preset operation is also required.
Preset value [105-106]
[104-105, Unsigned32, rw]
These registers allow to set the encoder position to a Preset value. The Preset
function is meant to assign a desired value to a physical position of the encoder
shaft. The chosen physical position will get the value set next to these registers
and all the previous and following positions will get a value according to it. This
function is useful, for example, when the zero position of the encoder and the
zero position of the axis need to match. The preset value will be set for the
MAN EM58_HS58_HM58 MT E 1.1.odt Programming parameters 56 of 104