Lingo SE White Paper
Protocol
TCP/IP
Addressing
BOOTP or manually configured IP
Any valid TCP/IP address and valid subnet mask
Supports two DNS server addresses, one Gateway address
Ports Used
80 (default) TCP if Web browser and Web services are enabled in the system
files. HTTP port is configurable.
161 UDP SNMP if enabled in the system files
162 UDP SNMPtrap if enabled in system files
23400 TCP Data.
23401 TCP Alarms
23402 UDP Executive-to-Executive (P2P) Data
Bandwidth Consumption
TYPE
SIZE
TIME PERIOD
METHOD
Lingo SE
Download
2.1
Megabytes
of data
Spread over 5
6 minutes
Continuous transmission
limited by TCP window
Lingo SE
Monitoring
200512
Byte Data
packet(s)
Continuous;
typically every
28 seconds,
depending on
network traffic
Request one packet.
Receive the packet. Request
the next packet.
Alarm
Report
5070 Bytes
per alarm
One per alarm
message
Field unit transmits message
and receives high-level
acknowledge before
proceeding to next message.
Alarm
Acknowledg
e
1020 Bytes
per alarm
One
acknowledge
per alarm
message
Alarm Receiver transmits
acknowledge message after
confirmed write to database.
Note! History indicates no negative impact with POS traffic but
recommended practice in large systems is to prioritize POS
packets over Novar alarm packets. A separate VLAN for all
Novar equipment might be considered.
TD-0375
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Lingo SE White Paper
Latency Requirements
Can withstand up to a 9-second roundtrip delay.
Security
Access Controls
Front-end software (i.e., ESS32, iScope, user access codes)
Local touchscreen access codes: Three levels: Monitor, Temporary, Super
User
System Access Code: Used by front-end software to authenticate the system
being accessed. Stored in the system files.
Network Anomalies
Lingo SE can withstand a broadcast or a direct-attack packet storm (tested up to
333 packets per second). When a storm is detected, the Ethernet connection
will go into low voltage (no longer operates) for a period of 3 to 5 seconds. It
then determines if traffic is still present. If so, the cycle starts over. If the storm
has stopped, the unit will reactivate the Ethernet connection. During the Ethernet
low-voltage mode, the RS-485 communication line remains operational so the
Lingo SE can continue to talk to its modules.
Physical/Electrical
Isolation:
Meets or exceeds IEEE 802.3b 10/100BaseT specifications
Minimum: 1500-Vrms isolation per IEEE 802.3b requirement.
Certifications
Lingo SE carries UL listing and CUL as an Energy Management Device under
UL File No. E90949. The product also meets the FCC and Industry Canada
requirements for Radio Frequency emissions for a Class A device.
Lingo SE and iScope are registered trademarks of Novar.
Ethernet is a registered trademark of Xerox Corporation.
The material in this document is for information purposes only. The contents and the product it describes
are subject to change without notice. Novar makes no representations or warranties with respect to this document.
In no event shall Novar be liable for technical or editorial omissions or mistakes in this document, nor shall it be liable
for any damages, direct or incidental, arising out of or related to the use of this document. No part of this document
may be reproduced in any form or by any means without prior written permission from Novar.
Copyright 2007 by Novar. All Rights Reserved. Printed in the U.S.A.
Novar; 6060 Rockside Woods Blvd., Cleveland, OH 44131
Tel.: 800.348.1235 www.novar.com
Lingo SE White Paper
TD-0375
1/12/07
