Reader Installation
26
750.001.003
Revised June 1999
© 1999 AXCESS
TM
Inc.
•
A Serial Gateway that coverts the computer’s RS-232 data to
LonWorks data and vice versa. LonWorks is the protocol used to
communicate with the FTT Readers. The Serial Gateway
transmits data from the computer to the Readers via twisted pair
wire. Up to thirty-one FTT Readers can be connected to the
Serial Gateway.
Note: Although the Serial Gateway has a terminal block, it cannot
directly control any access devices. Do not wire access devices to
the Serial Gateway.
Required Materials
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Unshielded twisted pair wire to run between Readers. The type of
cable chosen affects the cable distances allowed in the FTT
network. The recommended cable lengths are given in the next
section.
•
Belden 85102, 16 AWG, single twisted pair, stranded 9/29,
unshielded, plenum
•
Belden 8471, 16 AWG, single twisted pair, stranded 9/29,
unshielded, non-plenum
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Level IV, 22 AWG, twisted pair, typically solid and unshielded
•
TIA 568A Category 5, 24 AWG, twisted pair, unshielded. This
cable type is recommended because it allows for upgrades.
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Sensitive trigger, TTL relays to drive door strikes or other devices
(for example, Altronix RBSN-TTL or Alarm Saf RBKS-124P)
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22 AWG wire, max four feet in length, to connect the FTT
Readers to the relays.
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Wire as specified by device manufacturers to connect the
devices to the relays.
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An RS-232C straight-through cable with a DB9 male connector to
connect the Serial Gateway to a computer.