Modem Expansion Board - Honeywell Mercury User Manual

Modem Expansion Board

The Modem Expansion Board allows the use of three additional
communication ports. With the Mercury Modem and the Expansion
Board, up to four instruments can be accessed using one phone line.
The Modem Expansion Board can only be used with a External
Mercury Modem enclosure. The Modem must have firmware version
2.XX or higher in order to use the expansion ports.
Alarm pulses from other devices can be connected to the alarm
channels of the expansion board. The signals from these devices can
then in turn be forwarded back to the host computer via the Mercury
Modem. Any device connected to the expansion ports must be able to
provide a momentary dry contact closure. Consideration must be
made that the contact closer source be protected to buffer the contact
closer and avoid any voltage spikes during transition. To order the
Modem Expansion Board Retrofit kit use the Mercury Instruments
part number 40-2236.
Adding a Modem Expansion Board
1. Unplug all batteries and remove the battery mounting plate by
loosening the (4) screws and lifting the plate up and out.
2. Attach the expansion board cable (provided in kit) to the
modem main board J1 (red stripe down) by plugging the keyed
connector (without the vinyl pull-tab) into the socket located on the
upper left edge of the modem main board.
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