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User’s Manual
LEDs
The ESERV-10 contains two green LEDs, which indicate network activity (ACT) and network
collisions (COL). The table below explains the LED functions:
COL ACT
LEDS
LED LED’s
state
Meaning
Off Normal
operation
COL
Blinking Network
collision*
Steady On
Operation voltage connected
ACT
Blinking
Packets received from the network
*NOTE: In case of a collision ESERV-10 retransmits the packet maximum of 16 times. In a properly
designed network these collisions occur seldom. Frequent collisions indicate that the network
segment is highly loaded.
Power Supply Connector
The ESERV-10 has a 7 – 24 VDC power supply connector shown below:
1
2
Pin 1 is positive (+)
Pin 2 is negative (–)
Product Information Label
The product information label on the underside of the ESERV-10 contains following info:
1. Product
ID
2. Serial Number (SN)
3. Ethernet Address (MAC Address)
Viola Systems Ltd.
Made in Finland
Example of MAC address
ESERV-10
000670000300
SN:
MAC:
ESERV-10
13
Viola Systems Ltd.