Table of Contents - TG Drives

EXTENDED REGISTER GROUPS
IENC
Group Group
No.
Description
IENC
IENC 69 Simple incremental encoder interface. This is a simple
interface to an incremental encoder.
GENERAL
The DMC 2 can handle a three channel Incremental Encoder (A, B and Z), with 5
Volt differential outputs. The connector also contains supply voltage for the device.
The incremental feedback can be used for commutating the motor (primary
feedback) or as a master signal to the Gearbox (secondary feedback).
FUNCTION
The interface always counts every edge (quadrature counting), which means that
an Encoder with 4096 pulses per turn gives 16384 counts per turn.
The Zero pulse (once per turn) triggers the counter to freeze the value on rising
edge of the marker pulse. This Zero pulse can also be used to trigger the Capture
mechanism, (see page 118 Capture group for details)
RELATED ITEMS
Capture function
EN1 – EN4
EXAMPLE USAGE
Use the Incremental encoder as master to Gearbox functions.
En2.Source,3 ;encoder as source to gearbox
Ienc.Mode,1 ;activate
GROUP MEMBERS (GROUP 69)
Group.Member Member
No.
Range Ability Default
IENC.Mode 0 0..1 RW 0
Turns on or off the incremental encoder interface.
1 = interface is active. See the XENDAT group.
IENC.Pos 1 ±31 bit R 0
This is the incremental position count from the encoder. This
counter counts every edge on the input signals thus an
encoder with 5000 pulses/revolution will here give 20.000
pulses/revolution since every edge is counted.
User's Manual 5.1 Inmotion Technologies AB
Doc. No.9032 0027 01 (B), Rev. 11.07.2001
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