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Part No. 6-847684-00 Rev. D01
Finish Installation
Johnson Controls METASYS® System:
The MEGA2 alarm panel is compatible
with Johnson Controls METASYS®
building automation system (Using
METASYS® Integrator). Each MEGA2
alarm panel is connected to a common
two-wire RS-485 serial computer interface
bus. Two wires are connected to pins 1
and 2 of annunciator module and then
connected to common data bus. Refer to
Schematic 9 (Pg. 21) for details. Each
digital display module and multi-signal
module within alarm panel is field
programmed with a unique network
address. Using this address, Johnson
Controls system can monitor alarm panel
status including digital pressure readings
and programmed alarm set points.
Building Automation System Wiring
Digital display modules of two alarm
panels may be wired together in such a
way that pressure readings of first panel
can be duplicated at second panel. Each
digital display module has RS-422 digital
outputs and inputs. By connecting digital
output (master output) of first panel to
digital inputs (slave input) of the second
panel, second panel will duplicate
pressure readings. Refer to Schematic 4
(Pg. 17) for details.
Slave Panel Wiring
