Input / Output 4-9MN1902
4.3.5 Digital outputs - X3
Location Connector X3
Pin Name Mint keyword
18 DOUT0 OUTX.0
19 DOUT1 OUTX.1
20 DOUT2 OUTX.2
Description Three general- purpose optically isolated digital outputs.
Output current: 50mA maximum each output
Update interval:
Immediate - Software (Mint programs)
2ms - DRIVEENABLEOUTPUT,
DRIVEOKOUTPUT and
GLOBALERROROUTPUT functions
Programmable - PLC Task functions
Each optically isolated PNP output is designed to source current from the USR V+ supply as
shown in Figure 28. The maximum saturated voltage across any of the outputs when active is
1.0VDC, so they can be used as TTL compatible outputs. If the outputs are used to directly
drive a relay, a suitably rated flyback diode must be fitted across the relay coil, observing the
correct polarity. This is to protect the output from the back-EMF generated by the relay coil
when it is de-energized. The outputs can be written to directly using the Mint keyword OUTX
(for example OUTX.2=1). The sense of the outputs can be configured in WorkBench v5, and
their states are displayed in the Spy window.
CGND
OUTX.x
USR V+
FlexDrive
II
NEC PS2562L-1
DOUT0
Load
(Relay with
flyb ack di ode
shown)
Pin 18
Pin 8
Pin 6
Figure 28 - X3 digital output circuit - DOUT0 shown
18
20
CGND 8
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