Perle Systems Iolan Sds4 Hl Device Server 4030370 User Manual

Hardware and Connectivity  37

Getting to Know Your IOLAN

z

External Power Supply—For all IOLAN models, this can be an external AC power supply, DC 
terminal, or power cord, depending on the model.

z

Console/Serial Switch—Found on desktop models only (rack mount models have a dedicated 
console port), this switch determines whether port 1 functions as a serial port or a console port. If 
you have an extended temperature or I/O model, you will see two console switches. 
Console/Serial Switch 1 is used to determine the console/serial setting for Port 1 and the 
Console/Serial Switch 2 is not used. 

z

Reset—The inset RESET button will reboot all IOLAN desktop and rack mount models if 
pushed in and released quickly. It will reset the IOLAN to factory defaults if pushed in and held 
for more than three seconds. (The RESET button is not available on medical unit models.) You 
can learn more about the Reset button in 

.

z

Serial Activity—All IOLAN models (except medical unit models) have an LED that blinks for 
serial activity.

z

Tx—Blinks with transmit serial activity. There is a Tx LED for each serial port.

z

Rx—Blinks with receive serial activity. There is an Rx LED for each serial port.

z

Ethernet—The Ethernet connector. SCS and SDS8/16/32C models have dual Ethernet. 

This section describes the components found on the IOLAN 1-port models.

Medical unit

Solid — Indicates the 
IOLAN has completed the 

power up cycle.

Solid — Indicates the 
IOLAN has a fatal error.
Blinks — After power up, a 
blinking red light means the 

IOLAN has encountered a 

critical error.
See 

 for 

possible causes.

Serial Activity

Power/Ready

Link/10/100

Activity (LAN)

Serial Port

External Power Supply

Console/Serial 

Switch

Reset 

Ethernet