Digital Inputs - Pulse
) provides an input for use with any 3 to 30 VDC pulse-generating device. DIO 1
through DIO 4 are galvanically isolated and are limited to 60 mA. DIO 5 and DIO 6 are non-isolated and are limited to
500 mA.
To configure a pulse input using the web interface, choose
Pulse
as the input type, and select a trigger state to indicate
whether the pulse will trigger when the signal is high or when it is low.
COM (-)
Signal (+)
DIO 1 to 4 are galvanically isolated (max 60 mA)
DIO 5,6 are non-isolated (max 500 mA)
DIO 1 to 6
Pulse
Generating
Device
(3-30 VDC)
Figure 3.12 - Digital pulse input
Digital Inputs - Open Collector
The digital open collector input (
) provides an input for use with any device with an open collector output.
DIO 1 through DIO 4 are galvanically isolated and are limited to 60 mA. DIO 5 and DIO 6 are non-isolated and are
limited to 500 mA. DIO 5 and DIO 6 can be wired for use with an internal pull-up resistor, or with a customer-supplied
resistor. When the internal pull-up resistor is used, signals can be transmitted over short distances without the use of an
external power supply. However, DIO 1 through DIO 4 can only be wired with a customer-supplied resistor.
To configure an open collector input using the web interface, choose
Open Collector
(
Open Collector with Customer
Supplied Pull-Up Resistor
or
Open Collector with Internal Pull-Up Resistor
for DIO 5 and DIO 6) as the input type,
and select a trigger state to indicate whether the input is to trigger when the signal is high or when it is low.
3-30VDC
Power Supply
COM (-)
Signal (+)
DIO 1 to 4 are galvanically isolated (max 60 mA)
DIO 5,6 are non-isolated (max 500 mA)
DIO 1 to 6
Open Collector
Output
COM (-)
Signal (+)
DIO 5,6 are non-isolated (max 500 mA)
DIO 5 & 6
Open Collector
Output
Figure 3.13 - Digital open collector input
56
Section 3
QRATE Scanner 3300 integrated control flow computer
