Ttl Signal To Rs422 Input; Acquisition Modes; Table 3-3: Incremental Counter: Acquisition Modes - Addi-Data MSX-E1701 Technical Description

Function description: Incremental counter inputs

3.4 TTL signal to RS422 input

i
IMPORTANT!
This option does not apply to the system MSX-E1701-24V.
A TTL signal may also be connected to a differential RS422 input using a reference voltage of approx.
1.4 V. The reference voltage is switched on through software and output at pin D- of the M23 female
connector. On that condition, a differential signal cannot be connected to input D.
TTL signal to input D
The reference voltage is output at pin D-. The ground of the TTL signal must be connected to the
ground of the female connector. The TTL signal has to be connected to pin D+.
TTL signal to input A / B / C
The reference voltage needs to be connected externally from pin D- to the desired negative input
(A- / B- / C-). The ground of the TTL signal must be connected to the ground of the female connector.
The TTL signal has to be connected to the requested positive input (A+ / B+ / C+).

3.5 Acquisition modes

There are four modes available for the acquisition of incremental encoder signals.
Mode
Single
Double
Quadruple
Direct
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Table 3-3: Incremental counter: Acquisition modes

Acquisition with a quarter of the highest possible resolution
Acquisition with half of the highest possible resolution
Acquisition with the highest possible resolution
Acquisition without detection of the direction
Feature
16
MSX-E1701