Bypass And Wdt; Block Diagram; Communication States - IBASE Technology IB831-NB User Manual

Bypass and WDT

The bypass function is used to link (or short) two independent Ethernet
ports when user's application software halts or when power is off.

Block Diagram:

Ethemet#1
Ethemet#2
WDT
I/O Command
GPIO

Communication States:

There are two communications states for the bypass function: (1) Normal
State, (2) Bypass State. A watchdog timer (WDT) or a GPIO are used to
control and switch the communication between the two states.
The block diagram in the section above shows the Normal State, where
the two Ethernet ports work independently. The following diagram shows
the Bypass State, where the two Ethernet ports are bypassed.
Ethemet#1
Ethemet#2
Bypass State
Relays are "Dis-energized"
WDT
I/O Command
GPIO
Normal State
Relays are "Energized"
Relay
Driver
Relay
Driver
IB831 User's Manual
INSTALLATION
Bypass
Relays
RJ45
CN11
RJ45
CN12
Bypass
Relays
RJ45
CN11
RJ45
CN12
15