Specifications

PPoowweerr LLEEDD
Indicates whether the unit is currently powered.
RReemmoottee//LLooccaall LLEEDD
The REMOTE/LOCAL LED indicates whether the unit is in REMOTE or LOCAL mode.
If the REMOTE/LED is amber in color, or does not match any of the below
conditions, refer to Appendix D for troubleshooting.
SSoolliidd GGRREEEENN::
The unit is in REMOTE mode.
SSoolliidd RREEDD::
The unit in LOCAL mode.
FFllaasshhiinngg RREEDD::
The unit is in LOCAL mode, but another networked unit performed
the switch. Take the unit out of LOCAL mode by pressing the
REMOTE/LOCAL button on the unit that performed the switch (it
will have a solid red LED).
RReemmoottee//LLooccaall BBuuttttoonn
There are two modes of I/O unit operation: REMOTE and LOCAL. REMOTE mode
(indicated by a solid green LED) is for standard operation. LOCAL mode (solid red
LED) disables command outputs. This is for the operator’s safety during unit
maintenance. Use the REMOTE/LOCAL button to toggle between these modes.
PPoowweerr CCoonnnneeccttoorr
Accepts an AC voltage input range of 100-240VAC, 50/60Hz, 15W, without manual
switching.
GG--BBuuss 11 && 22
Uses RS-485 cable to allow up to sixteen I/O units and one Voice Interface unit to
be linked, forming the G-Bus network.
CCOOMM11
Used to connect a four-wire modem (using the cable supplied with the modem) or
to establish a direct connection from a PC to the I/O unit (using the null modem
cable provided with the I/O unit).
CCOOMM22
Connects a dial-up modem (using a standard DB9 to DB25 serial cable) and is used
for uploading firmware or establishing a direct connection (using the supplied null
modem cable).
MMeetteerriinngg
Monitors analog DC voltages. On an I/O 8 unit, the metering and status channels
share the same DB37 connector (labeled Metering/Status).
SSttaattuuss
Monitors high or low status inputs or contact closures.
CCoommmmaanndd 11--88
Solid-state open collector outputs for channels 1-8, definable as momentary or
latching.
CCoommmmaanndd 99--1166
Solid-state open collector outputs for channels 9-16, definable as momentary or
latching. An I/O 8 unit has connections for commands 1-8 only.
CHAPTER 1: INTRODUCTION
11
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