I/O Model Features
84
IOLAN Device Server User’s Guide, Version 1.8
Analog Channels
Analog input channels monitor current or voltage within a specified range and can then trigger an
alarm for up to five severity levels that will send an email, SNMP trap, and/or syslog message when
the alarm is triggered and/or cleared. See
Alarms
on page 75
for more information on alarms.
In our industrial freezer warehouse, a Device Server A4R2 is used to monitor humidity transducers,
which are in place to help prevent freezer burn. If the humidity reaches a certain percentage
(monitored by an Analog channel) a syslog message is sent to the Monitoring Application. The
Monitoring Application then sends a command to the Device Server via the Perle API that causes the
Relay channel to activate an internal freezer dehumidifier. The relay is turned off when the Analog
channel sends a clear syslog message to the Monitoring Application and the Relay channel is
deactivated.
Device Server
pe
rle
Monitoring
Application
Network
Industrial
Freezers
Analog I/O
Analog
Relay
Relay
A4D2
Analog
Summary of Contents for IOAN DS1
Page 1: ...IOLAN DS Family DS1 TS2 User s Guide Version 1 8 Part 5500162 18 November 2006...
Page 18: ...Table of Contents 18 IOLAN Device Server User s Guide Version 1 8...
Page 50: ...EIA 232 Cabling Diagrams 50 IOLAN Device Server User s Guide Version 1 8...
Page 194: ...I O Commands 194 IOLAN Device Server User s Guide Version 1 8...
Page 202: ...API I O Access Over TruePort 202 IOLAN Device Server User s Guide Version 1 8...
Page 210: ...Glossary 210 IOLAN Device Server User s Guide Version 1 8...
Page 214: ...Index 214 IOLAN Device Server User s Guide Version 1 8...