Lika AMM80, Руководство пользователя

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AMM80 • SSI, BiSS, & RS-485
4.8 Zero setting / Preset input
NOTE
Zero setting / Preset input is only available with Molex 53261-1271 connector
(...-X2 order code).
The output position information at a point in the shaft rotation can be set
either to 0 (SSI interface) or to a desired value called “preset” (BiSS C-mode
interface; the preset value must be set next to the
Preset
registers, see on page
38). The Zero setting / Preset input allows the operator to activate the zero /
preset value by using an input signal sent by a PLC or other controller. To
activate the zero setting / preset function, connect the Zero setting / Preset
input to +Vdc for 100 µs at least, then discVdc; normally voltage must
be at 0Vdc. Zero setting / Preset must be set after Counting direction. We
suggest setting the zero setting / preset function when the encoder shaft is not
turning. If not used, connect the Zero setting / Preset input to 0Vdc.
WARNING
In the BiSS C-mode interface model, the Zero setting / Preset input is active
only when the
Preset setting enable
register is set to “01”, see on page 41;
otherwise the hardware function is disabled.
NOTE
In the BiSS interface the preset can be activated also by using the Activate
Preset
function of the
Command
register. For detailed information please refer
to the
Preset
registers on page 38 and to the
Command
register on page 42.
4.9 Counting direction input
NOTE
Counting direction input is only available with Molex 53261-1271 connector (...-
X2 order code).
The standard counting direction provides the count up information when the
shaft/code disk turns as shown in the Figure in the next page (clockwise rotation
viewed from the flange side).
The Counting direction input allows to set whether the position value output by
the encoder increases when the shaft/code disk rotates clockwise (CW) or
counter-clockwise (CCW). The clockwise rotation is intended as shown in the
Figure. If the Counting direction input is connected to 0Vdc, the position value
increases when the shaft/code disk rotates clockwise; on the contrary, if the
Counting direction input is connected to +Vdc, the position value increases
when the shaft/code disk rotates counter-clockwise. If not used, connect the
Counting direction input to 0Vdc (standard counting direction, see the Figure).
MAN AMM80 SSI_BiSS_RS485 E 1.5.odt 4 - Electrical connections 28 of 60