Interfaces
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11.2
USB Interface
LIMAX1M implements a USB2.0 Full Speed Device with the CDC class ("Virtual COM-Port").
The detailed USB specifications can be requested as a separate document from ELGO.
11.3
SSI Interface
11.3.1
Data Protocol
Figure 27: SSI data protocol
T:
4 µs (
=
250 kHz maximum clock frequency)
T
m
:
20 µs (Monoflop time)
T
p
:
min. 250 µs (break time)
11.3.2
SSI-Bits
D00: Not used (PFB-Bit, 0)
D01: Pos bit 0.0625 mm
…
D22: Pos bit 131072 mm
D23: Pos status bit (0: ABS-Pos / 1: REL-Pos)
D24: Reserved for later use
11.4
RS485 or RS422 Interface
On request an RS485 or RS422 interface is available for LIMAX1M. The detailed RS485 or RS422 specifications
can be requested as a separate document from ELGO.
T
T
p
T
m
MSB
Data+
Clock+
D D D D D D S
n-1 n-2 n-3 2 1
LSB
