12.5 Operating State LED
The rear panel of the
M50PCI
stepping motor card
has an LED to show the current operating
state. The table below lists the particular states that the LED indicates:
LED STATUS
Steady yellow glow
DSP program has not yet been loaded
Flashes yellow
Program loaded, card active, motor power supply too low
Flashes green
Program loaded, card active, motor power supply ok (>11V)
Flashes red
Program loaded, card active, motor power supply too high (>50V)
Steady red glow
Excess temperature at an axis end position, motors stopped
Off
Card de-activated
12.6 Limit Switches
Six inputs are available on the
M50PCI
stepping motor card
. Each of these can be used to
connect a limit switch, a reference limit switch or general inputs. Reference limit switches
and inputs are not independently evaluated by the axis control program of the
M50PCI
stepping motor card
.
If an input is assigned as a positive limit switch to an axis, this axis will remain stopped in the
positive motion mode immediately after this input has been activated. The axis can only
move in the negative direction until the input is de-activated (the position and buffer of this
axis remain unchanged and can be reset, if necessary, by the application program).
Variables are available in the driver software to enable the particular operating state of the
limit switches to be defined as make contacts or break contacts as well as low active and
high active (see Chapter Switch Configuration in the manual on support CD).
The CMOS level applies; in other words, input voltages <2.2 volts are evaluated as a logical
'0'; voltages greater than +3 volts, as a logical '1'. The inputs when inactive are at +10V via
internal pullup resistors.
In their activated state, a current of 2.5mA maximum flows. The
inputs are short circuit proof and protected from overvoltage and accidental interchanging of
poles up to 12V.
To supply the electronic limit switches, an auxiliary supply of +10V, 100mA, is available at
the connector (suggested wiring: see Appendix in the manual on support CD ).
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