User Manual

TMCM-1160 V1.01 Hardware Manual (Rev. 1.01 / 2012-JUL-27) 13
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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 TMCM-1160 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