User`s guide

Establishing Communications
Remote Access
Release E UMC800 Control Builder User’s Guide 33
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Remote Access
Overview
Remote controller access via dial-up modem is available via the communication setup. An external modem
is required at the controller and is connected to the standard RS232 configuration port. Remote access
functions include on-line monitoring, configuration upload and download.
Modem requirements
Some commercially available modems can be used with the UMC800 controller. Honeywell has identified
four commercially available modems for use with the UMC800. The modem must have the following
capabilities:
• RS232 interface
• Auto answer
• Can operate at 9600 baud, 8 data bits, 1 stop bit, and no parity
• Hardware handshaking can be disabled
• Software handshaking can be disabled
• Data Terminal Ready (DTR) input can be disabled
• Result codes can be suppressed
• Echo can be disabled
• Must be equipped with non-volatile memory (NVRAM) so that settings that are configured using
command strings can be retained during a power-outage
• Must be able to load the NVRAM settings automatically on power-up
REFER TO THE CONTROLLER INSTALLATION GUIDE # 51-52-25-61 FOR RECOMMENDED
MODEMS.
Cable requirements
You will need an interface cable to connect the modem to the DB-9 female connector on the UMC800. If
your modem has a 25-pin connector, be sure to use a DB-25 to DB-9 modem cable.
If your modem requires command string configuration, you will need an interface cable to connect the
modem to your PC. Refer to your modem and computer documentation to determine this cable’s
requirements.
Modem configuration
Before connecting a modem to the UMC800 RS232 port, the modem must be configured with the
following settings:
• Baud Rate = 9600
• Parity = None
• 1 stop bit
• 8 data bits