Perle Systems STS, SCS manual Hosts, Local connection

Channels

Allow Multiple	When this option is enabled, multiple I/O channels and/or TCP/IP applications
Hosts to Connect	can connect to this channel/serial signal pin.
	Default: Disabled
Connect to	When enabled, the channel/serial signal pin initiates communication to another
	I/O channel or a TCP/IP application.
	Default: Enabled
Host Name	The configured host or another IOLAN that the I/O channel will connect to.
	Default: None
TCP Port	The TCP Port that the channel/serial signal pin will use to communicate to
	another IOLAN or a TCP/IP application.
	Default: 2000 for channel 1, then increments by one for each channel

Connect to Multiple When enabled, input channel or serial signal pin can communicate to multiple

Hosts	hosts running a TCP/IP application or I/O channels.
	Default: Disabled
Define Additional	Click this button to define the hosts/IOLANs that this channel or serial signal
Hosts Button	pin will connect to. This button is also used to define the Primary/Backup host
	functionality.
Local connection	When this option is enabled, the input or output, depending on how the channel
	or serial signal pin is configured, will be associated with another local IOLAN
	I/O channel or serial signal pin.
	z When the channel is configured as digital input or when configuring an
	input serial signal pin, the Output Channels parameter displays all the
	local digital output signals or relays that it is associated with.
	z When the channel is configured as digital output, you must select a local
	digital input channel or input serial signal pin on the IOLAN.
	Note that the Failsafe Action is not compatible this option.
	Default: Disabled
Enable TCP	Enables a per-connection TCP keepalive feature. After the configured number
Keepalive	of seconds, the connection will send a gratuitous ACK to the network peer,
	thus either ensuring the connection stays active OR causing a dropped
	connection condition to be recognized.
	This parameter needs to be used in conjunction with Monitor Connection
	Status Interval parameter found in the Serial, Advanced, Advanced Settings
	tab. The interval specifies the inactivity period before "testing" the connection.
	Default: Disabled

256 IOLAN SDS/SCS/STS User’s Guide, Version 3.6