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Table 4-7: External resistor for open collector output (single-ended encoder)
4.6 Alarm Signal ALM
The alarm signal ALM is used to indicate the alarm status from the servo driver. When the ALM signal is active,
the DMC5400 will stop the output signals (PUL/DIR). The following table lists the relative signal name, pin
number, and the axis number. When the function is disabled, these ports can be use as general purpose inputs.
Table 4-8: ALM pins
X1 Pin
Signal
39
ALM0
25
ALM1
59
ALM2
The input circuit of alarm signal is shown in the following diagram. The external switches featuring a contact
capacity of +24V, 6mA minimum. An internal filter circuit is used to filter out the high frequency spike, which
may cause wrong operation. See "Software Manual for the DMC5400 Motion Controller" for more detail
operation of the ALM.
4.7 In-Position Signal INP
The in-position signal INP from the servo motor driver indicates the deviation error is zero. That is the servo
position error is zero. The following table lists the relative signal name, pin number, and the axis number. When
the function is disabled, these ports can be use as general purpose inputs.
Table 4-9: INP pins
X1 Pin
Signal
40
INP0
26
INP1
60
INP2
The in-position signals are usually from servomotor drivers. The external switches featuring a contact capacity of
+24V, 6mA minimum. An internal filter circuit is used to filter out the high frequency spike, which may cause
wrong operation. See "Software Manual for the DMC5400 Motion Controller" for more detail operation of the
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VDD
+5V
+12V
+24V
Description (Axis)
Alarm signal, Axis0
Alarm signal, Axis1
Alarm signal, Axis2
Figure 4.7: ALM signal interface circuit
Description (Axis)
In-position signal, Axis0
In-position signal, Axis1
In-position signal, Axis2
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Hardware Manual for the DMC5400 Motion Controller
X2 Pin
Signal
30
ALM3
X2 Pin
Signal
31
INP3
Page: 17/36
External Resistor R
0Ω
1.8KΩ
4.3KΩ
Description (Axis)
Alarm signal, Axis3
Description (Axis)
In-position signal, Axis3
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