CHAPTER 3: SYSTEM ARCHITECTURE
SNAP PAC Brains User’s Guide
17
17
Specifications
Specifications
LEDs and Network Interfaces
Power Requirements
5.0–5.2 VDC at 750 mA maximum (does not include module power requirements)
Memory
16 MB RAM
Backup battery
CR2032 Lithium, user replaceable. 10-year minimum life for real-time clock backup.
Network Interfaces
IEEE 802.3 network, 10Base-T and 100Base-TX. Automatic MDC/MDI-X crossover
(Ethernet crossover cable not required for direct connection to PC). Two switched
ports, allowing multi-drop (daisy-chain) or standard star network configuration.
Maximum Ethernet
Segment Length
100 meters with Category 5 or superior UTP.
For 100 Mbps at this distance, use Category 5 or superior solid UTP.
Operating Tempera-
ture
0 to 60 °C
Storage Temperature
-40 to 85 °C
Humidity
0–95% humidity, non-condensing
Switched Ethernet network interfaces
Brains can be networked in a daisy-chain
configuration or in a standard star
configuration using either Ethernet interface.
Both interfaces use the same IP address.
NOTE: When using a daisy-chain
configuration, be aware that if power to a
brain is lost, all brains beyond it on the
network will also lose communication.
Akso see
LEDs
LED
Indicates
LNK
Link established with
Ethernet network
ACT
Activity on Ethernet
network
STAT
Brain status
MS
NS
Unnamed
Reserved for future
use
