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IMS-MN-LMDA42C_A.pdf
Signal Input Circuits
LMD CANopen
Open collector (sinking):
+
Constant
Current
Source
INPUT
INPUT_REF
Open collector (sourcing):
Constant
Current
Source
INPUT
+
INPUT_REF
Signal Input Wiring and Usage Examples
Mechanical Switches
Sinking Operation: In the schematic below, the inputs will float at a 24V level (HIGH), then be at
ground (LOW) when the switch is closed.
Sourcing Operation: The configuration shown below can be switched to a sourcing
configuration by reversing the bias on the Input Reference, with the power supply return
connected to the reference. The inputs will then be at ground (LOW), and at 24V(HIGH) when
the switch is closed.
Input reference
Input 2 (Jog +)
Input 3 (Jog -)
Input 4 (G0)
LMD
Jog +
Jog -
G0
+5 to 24 VDC
+
–
Refer to the LMD MCode or the appropriate fieldbus manual for full setup and configuration
details for the inputs.
Input #
Function
Switch state
MCode setup string
(Is=[in #],[func],[active])
Notes
2
JOG +
normally open
IS=2, 7, 0
Set IN 2 as + JOG, active when low (switch closed)
3
JOG –
normally open
IS=3, 8, 0
Set IN 3 as – JOG, active when low (switch closed)
4
G0
normally closed
IS=4, 4, 1
Set IN 4 as G0, active when high (switch open)
