Beckhoff M3120 Bedienungsanleitung PDF herunterladen (Seite 6)

M3120 Incremental encoder 4x Beckhoff II/O-Lightbus

Page 6 of 14 Version 1.1 Date 20.10.94

Bit Value Signal Function

4 - - not used

5 - - not used

6 - - not used

7 - - not used

Rem.: The READ, SET and ENABLE commands can be transmitted in any form.

Counter status byte

After an II/O-Lightbus read operation the counter status of the M3120 points to the module in

the data byte DO. The bits of the counter command byte stand for the following functions :

76563210

STAT KOM LV GF2 GF1 GF0 EE1 EE0

Bit Signal Function

0 EE0 Evaluation mode;

must be selectet inside the D-SUB connector by bridges to GND

1 EE1 *)

2GF0

3GF1

a low pass filter is adjustable by software

4GF2

the low pass filter is abjustable to 1250 kHz by hardware

5 LV zero point value valid

LV = 0

The EL command was transmitted, but there was no zero impulse

yet.

LV = 1

the zero point value was latched

6 KOM COMPLEMENTARY

shows, if a bridge is present in the D-SUB connector

KOM=0

evaluation of normal pick off signals A, B, C; bridge to GND inside

the D-SUB connector

KOM=1

additional evaluation of complementary signals; open, no bridges

inside the D-SUB connector

A, /A, B, /B, C, /C

7 STAT status signal

not in use yet

1 2 3 4 5 6 7 8 9 10 11 12 13 14

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Beckhoff M3120 Bedienungsanleitung Seite 6