Measurement Computing WEB-TC - Manual (Page 33)

WEB-TC User's Guide Specifications
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Network protocols
Table 14. Factory default specifications
Protocols implemented IP, ARP, ICMP, DHCP, UDP, TCP, NBNS, HTTP
Protocols using UDP or TCP for transport communicate on their IETF assigned
ports (for example HTTP on TCP port 80).
UDP messaging protocol UDP port 54211
TCP downloading protocol TCP port 54267
HTTP 1.0 alternate port TCP port 49152-65535 (not including 54267)
Network name "webtc_xxxxx", where xxxxx is the device's serial number
Network name publication via NBNS (responds to b-node broadcasts, therefore only available on the local
subnet)
Max number of simultaneous HTTP
connections 3
Max number of non-HTTP TCP
sockets 5
Network security
Table 15. Factory default specifications
Security implementation IP address based session manager with user-name/password login for
configuration and control transactions (data is not secured.)
Session timeout 5 minutes with no activity
User-name/password encryption Base64 (The default web page does not support encryption if Javascript is
disabled in the web browser.)
Vulnerabilities Denial of service attacks, user-name/password spoofing, script probing and
simple decryption
LED displays and the factory reset button
Table 16. LED and button configurations
POWER/COMM LED (top) 4.75 V < V
ext
< 5.25 V On
V
ext
< 4.75 V
,
V
ext
> 5.25 V Off (power fault)
Blinks during microcontroller communications.
LINK/ACTTIVITY LED (bottom) On when there is a valid Ethernet connection and blinks when an Ethernet packet
is sent or received.
Factory reset button When held for 3 seconds, the POWER LED will turn off for a short time,
indicating a reset is in process. When the POWER LED turns back on, reset is
complete and the factory default network settings have been restored.
Environment
Table 17. Environmental specifications
Operating temperature range 0 to 55 ° C
Storage temperature range -40 to 85 ° C
Humidity 0 to 90% non-condensing
Mechanical
Table 18. Mechanical specifications
Dimensions 127 mm (L) x 88.9 mm (W) x 35.56 (H)