User Manual

PD-1160 V1.1 Hardware Manual (Rev. 1.02 / 2013-JUL-23) 15
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3.2.4 Step/Direction Connector
A 2mm pitch 4-pin JST B4B-PH-K connector is used for step and direction input signals. This is an option
in case the on-board controller is used for configuration of the driver stage, only. The Step/Direction
input is optically isolated and will allow direct control of the driver stage.
Please do not attach any signal to this input if the on-board motion controller is used! Otherwise step or
direction signal connected here might interfere with signals generated on-board.
1
4
Pin
Label
Description
1
COM
Common supply for the opto-coupler inputs (+5V… +24V)
2
ENABLE
Enable signal input
(function depends on firmware)
3
STEP
Step signal input
(connected to step input of TMC262 driver IC)
4
DIRECTION
Direction signal
(connected to direction input of TMC262 driver IC)
Table 3.4 Connector for step/direction signals
3.2.4.1 Step / Direction / Enable Inputs
The inputs Step, Direction and Enable are electrically (optically) isolated from the power supply and all
other signals of the module. These inputs have one common reference input COMMON.
The COMMON input should be connected to a positive supply voltage between +5 V and +24 V. Step /
Direction / Enable signals might be driven either by open-collector / open-drain outputs or by push-pull
outputs.
In case of push-pull outputs the COMMON supply voltage should be equal / similar to the high signal
voltage level of the push-pull drivers.
8mA
8mA
8mA
+3.3V
GND
Enable
Direction
Step
Common
(5… 24V)
microcontroller
TMC262
TMC262
Figure 3.9 Step / Direction / Enable inputs