Page 797 - Med Plaza and Cancer Center

PROPRIETARY AND CONFIDENTIAL DRAFT 28/Feb/03

Medical Gas Alarm Network System Interaction
Chapter 3: Theory of Operation

Output Relay on Area Alarms

There is one dry-contact relay (MAIN ALARM) featured in the Area Alarm
Breakout P.C. Board that provides an output signal. This output can be wired
to satisfy either normally closed or normally open requirements from another
system.
• MAIN ALARM RELAY

• When the Master Alarm is in alarm condition, this relay activates.
• When the Master Alarm is silenced, this relay stays activated.

• When the Master Alarm condition is remedied, this relay deactivates.

Ethernet Wiring Conventions

The MedPlus TotalAlert™ Alarm Network can be connected to the facility’s
Ethernet (Intranet) enabling the appropriate personnel to gather information
about the alarm system from a personal computer. For information about how
to set up the Ethernet network, refer to the MedPlus TotalAlert™ Alarm
Network—Information System Requirements Technical Data Sheet (tds053).

Some of the requirements when using the Ethernet with the MedPlus
TotalAlert™ Alarm Network are as follows:
• The Master Alarms, Area Alarms, and any personal computers (PCs) used
in the alarm network must be connected to a common Ethernet system.

• The operating systems in the PCs must be either Windows® 98 (or above),
or Macintosh OS9 (or above).

• The PCs must have one of these two Internet browser software packages
1
installed: Netscape Navigator® 4 (or above) or E-Microsoft Internet
2
Explorer® 4 (or above).
• The Area Alarms must be ordered with the optional Network
Communications Board. The Master Alarms are Ethernet-ready.

If the network communications option is implemented, you can browse,
download, configure, and troubleshoot Master Alarms and Area Alarms with a
personal computer that is either connected to the facility’s Ethernet or
connected to a serial port on your personal computer (see “Configuring and
Browsing the Master Alarm by Using the Web Pages” on page 1-72). The
alarm’s Web pages are built-in; no setup is required.

1. Netscape Navigator® is a registered trademark of Netscape Communications Corp.
2. E-Microsoft Internet Explorer® is a registered trademark of Microsoft Corporation.

Page 3 - 14 MedPlus TotalAlert™ Alarm Network Operation and Maintenance Manual (man291ra)