Lika EM58 MB, User Manual

Page: 72 / 92

ES58 • EM58 MODBUS®
Operating parameters [0008 hex]
[Register 9, Unsigned16, rw]
Byte structure of the
Operating parameters [0008 hex]
register:
byte MSB LSB
bit 15 … 8 7 … 0
msb lsb msb lsb
Byte 0
Scaling function
bit 0 This bit is meant to enable / disable the scaling parameters
Custom counts per revolution [0000-0001 hex]
and
Custom total resolution [0002-0003 hex]
. When the
scaling function is disabled (bit 0 = 0), the encoder uses its
own physical resolution (i.e. hardware counts per revolution
and number of hardware revolutions, see the encoder
identification label); otherwise, when the scaling function is
enabled (bit 0 = 1), the encoder uses the resolution set next
to the registers
Custom counts per revolution [0000-
0001 hex] and Custom total resolution [0002-0003
hex]
in accordance with the following relation:
Transmitted
position value
=
Custom counts per revolution
[0000-0001 hex]
x Real position
≤
Custom total resolution
[0002-0003 hex]
Hardware counts per revolution
The value that is currently set can be read in the
Scaling
bit
0 of the
Status word [000A hex]
, see on page 80.
WARNING
Every time you enable/disable the
Scaling function
and/or
change the scaling values (see the
Custom counts per
revolution [0000-0001 hex]
and
Custom total
resolution [0002-0003 hex]
registers), then you are
required to check and, if necessary, to set a new preset value
(see the
Preset value [0004-0005 hex]
registers) and
finally save the new parameters (see the
Save parameters
function).
MAN ESx58x_EMx58x MB E 1.3 Programming parameters 72 of 92