Instruction Manual

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E) Indicator LEDs
There are 6 indicator LEDs on the board. Table 2 provides the readout key.
Table 2 LED indicator function description
#* Symbol Function Description
1 EN Enable LED on: enable signal high
2 CK Clock LED on: receiving input clock signal
3 FE Far end sensor
status
LED off: far end sensor not connected
LED on: far end sensor connected
LED blinking: far end sensor triggered
4 FW Direction CCW LED blinking: motor direction CCW
(control signal TTL high)
5 BW Direction CW LED blinking: motor direction CW
(control signal TTL low)
6 HM Home sensor
status
LED off: home sensor not connected
LED on: home sensor connected
LED blinking: home sensor triggered
*LEDs numbered from bottom to top in Figure 2.
F) 2-bit DIP switch for motor step mode selection
This 2-bit DIP switch is for stepper motor step control. The board can drive the motor in
full, ½ and ¼ step modes. Fractional modes can be used for smoother motor motion and
less noise. The default setting is ¼-step mode.
Bit numbers and ON/OFF status are labeled on the board.
1 ON
1 2
ON
OFF
Figure 4 DIP switch position and status
Table 3 Dip switch position key (motor step mode)
Document # GP-IN-MDL-003-CONTROLB-12 Page 7 of 13