Perle Systems Iolan Sds4 Hl Device Server 4030370 User Manual

 279

Channels

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.

How long the channel will be active during the pulse mode. 
Range: 1-9999 x 100 ms
Default: 1 (100 ms)

When a deactivate command is issued, a delay is implemented before the 

command is executed. 
Range: 1-9999 x 100 ms
Default: 1 (100 ms)

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 

 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

Network