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Digital I/O Extension
Overview
The Digital I/O extension feature connects a digital input signal to digital output(s)/relay(s) and/or a
TCP/IP application over an IP network. Therefore, when the state of the digital input changes, you
can also change the state of the digital output or relay channel or output serial signal pin on a local
I/O channel(s), other IOLAN I/O channels, other IOLAN serial signal pins, or the data can be sent to
an application(s).
For example, when the door opens (I/O digital input sensor) in a factory, a light goes on in the
reception office (remote IOLAN relay channel), and the door open/close is logged by an application
on a remote host.
perle
IOLAN
perle
Remote Host
Network
Reception
Front Door
Warehouse
IOLAN
Active Signal
Width
How long the channel will be active during the pulse mode.
Range: 1-9999 x 100 ms
Default: 1 (100 ms)
Delay How long to delay an active-to-inactive or inactive-to-active setting after it is
manually started.
Range: 1-9999 x 100 ms
Default: 1 (100 ms)
Failsafe Action When there has been no I/O activity within the specified time (set in the I/O
Interfaces, Settings on the Failsafe Timer tab) and the
Failsafe Timer is
triggered.
Data Options:
z None—The state of the Digital/Relay output remains the same, no change.
z Activate Output—Activates the channel.
z Deactivate Output—Deactivates the channel.
Default: None