64 / 102
64
7790A MCI
MicroController Interface
The TAC I/NET
TM
7790A MicroController Interface provides a “Gateway”
between TAC’s token passing, Peer-to-Peer Controller LAN and a network of
standalone MicroControllers. The MCI also functions as a network con-
troller for a standalone system. The MCI provides global functions for the
MicroControl Units. These global functions include: Access Initiated Control,
Elevator Control, Event Initiated Control, Trending, Runtime Accumulation,
Automatic Time Scheduling, Calculations, Anti-Passback and periodic syn-
chronization of the local clocks in the MicroControl Units.
Security
FUNCTIONAL FEATURES
•
Integration
– Environmental
– Access Control
– General Purpose
•
MicroControl units supported
– 123 Series MicroRegulators
TM
– SCU1284 Security Control Unit
– SCU1280 Security Control Unit
– SCU1200 Security Control Unit
•
Peer-to-Peer, Token Passing LAN
standard
•
Dual MicroController Sub-LANs
– 16 SCUs per MCI
– 64 MRs per MCI
– 64 MicroControl Units per MCI
(SCU and MR combined)
– Mix and Match Controllers on
the Sub-LANs
•
Counter-Scanning Loop Option
•
Front End Controller for
Standalone System
– Supports up to 64 Doors
– Supports up to 64 HVAC
Equipment Units
•
Remote Operation over Dial-Up
Phone Lines
•
Fiber Optic Compatible
•
Local Ports for PC or Modem
•
Auto Dial/Auto Answer Modem-
Option Board
•
Modular, Object-Oriented
Programming
•
Gateway for Global Control
Functions
•
Resident Programs for:
– Access Initiated Control
– Elevator Control
– Environmental Control
– Energy Management
– Historical Data Collection
SPECIFICATIONS
Operating voltage . . . . . . . . . . . . . . . . . . . . . . . 24 V AC
Power consumption . . . . . . . . . . . . . . . . . . . . . . 40 VA max.
Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245 x 255 x 15mm
(9.65” x 10” x 0.6”)
Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 per MCI
Controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum 64
MicroControl Units
per MCI
DESCRIPTION
7790A-C MicroController Interface – Baseplate Mounted
ACCESSORIES
RS232EXP-C Synchronous two-way modem card (w/o modem) – Plugs
on to 7790 base card
CBL072
Cable, Controller DE9 to PC DE9, 6 ft (1.83 m)
CBL074
Cable, Controller DE9 to Modem DB25, 6 ft (1.83 m)
TCON109 7790 LAN Interface Unit Installation Guide – Hardware
platform for MCI