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Reinitializing and Resetting the Hub
The information in this section is not a standard part of the startup sequence; however, it is
provided for reference if the ESP serial hub must be reinitialized or reset.
Reinitializing
The INIT button on the front of the hub may be used to remove configured information from an
ESP hub. The hub stores nonvolatile data such as the SNMP community name, admin password,
system contact and IP address in memory. This information is erased by pressing and holding the
INIT button until reinitialization occurs.
When the INIT button is first pressed, the ONLINE LED will begin to blink to confirm that you
have pressed the INIT button. As the INIT button remains pressed, the ONLINE LED will blink at a
faster rate. After approximately 12 seconds, the ONLINE LED will turn off. At this point, all
nonvolatile information will be reset to the factory defaults and the hub will immediately reboot.
You may also reinitialize the hub using the web interface (see Reinitializing the Hub on page 41) or
the configuration utility (see Reinitializing the Hub on page 51).
Resetting
The RESET button on the front of the hub may be used to reset the serial hub.
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On ESP-2 MI and ESP-4 MI hubs, pressing this button will cause an immediate reboot.
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On ESP-8 MI and ESP-16 MI hubs, pressing and holding this button for approximately one
second will cause an immediate reboot if the master application is running. If the master appli-
cation is not able to run (that is, only the bootloader is operational), pressing the RESET button
will have no effect. However, if this condition persists for more than 15 seconds, the watchdog
timer will cause the hub to reset.
You may also reset (reboot) the hub using the web interface (see Rebooting the Hub on page 41) or
the configuration utility (see Rebooting the Hub on page 51).
Chapter 2: Hardware Installation and Network Configuration
13
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