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NetBotz Rack Monitor 200 Installation and Quick Configuration Manual22
Modbus
Modbus lets you view the Rack Monitor 200 through the interface of your building management system.
It is read-only.
The Modbus interface supports 2-wire RS-485, plus ground.
Note: Modbus can be configured to run at either 9600 or 19200 bps.
See “Additional Documentation” on page 1 for details on accessing the Modbus register map.
How to Recover from a Lost Password
You can use a local computer (a computer that connects to the Rack Monitor 200 through the serial port)
to access the control console.
1. Select a serial port at the local computer, and disable any service that uses that port.
2. Connect the provided RS-232 configuration cable to the selected port on the computer and to the
RS-232 Console Port at the Rack Monitor 200.
3. Run a terminal program (such as HyperTerminal) on your computer and configure the selected
port for 9600 bps, 8 data bits, no parity, 1 stop bit, and no flow control.
4. Press
ENTER, repeatedly if necessary, to display the User Name prompt. If you are unable to
display the User Name prompt, verify the following:
– The serial port is not in use by another application.
– The terminal settings are correct as specified in step 3.
– The correct cable is being used as specified in step 2.
5. Press the Reset switch. The Status LED will flash alternately orange and green. Press the Reset
button a second time immediately while the LED is flashing to reset the user name and password
to their defaults temporarily.
6. Press
ENTER as many times as necessary to redisplay the User Name prompt, then use the default,
apc, for the user name and password. (If you take longer than 30 seconds to log on after the User
Name prompt is redisplayed, you must repeat step 5 and log on again.)
7. From the Control Console menu, select System, then User Manager.
8. Select Administrator, and change the User Name and Password settings, both of which are
now defined as apc.
9. Press
CTRL+C, log off, reconnect any serial cable you disconnected, and restart any service you
disabled.