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UM353-1
13.0 CIRCUIT DESCRIPTION
This section provides a block diagram level circuit description of the Moore 353.
13.1 OVERVIEW
Controller hardware architecture is shown in Figure 13-1. Notice that all major plug-in assemblies interact with the
Controller Board.
The Display Assembly is used for operation and configuration. The MPU-based Controller Board performs many of
the controller's signal processing and process control functions in addition to overseeing internal operations. The
Controller Board's on-board power supply furnishes DC operating voltages to all plug-in assemblies and to external
process transmitters connected to the rear terminals. The I/O Expander board provides additional I/O. Networking
options include Modbus, Local Instrument Link and Ethernet.
Power
Input
Fieldbus
LonWorks
Protocol
26 Vdc to
Transmitters
Ethernet
Network
(RJ-45)
Modbus or
LIL Network
(NCA/NCB)
Analog
Inputs
1-3
Digital
Inputs
1-3
Rear
Connectors
Universal
Analog
Inputs
1 & 2
Analog
Input 4
Universal
Digital
Inputs
1 & 2
Digital
Input 4
March 2003
MPU Controller Board
MPU
LonWorks
Board
Power
Supply
LIL or
Ethernet
Network
Board
W2 - LIL,
Modbus, or
Ethernet
Modbus
Jumper
I/O Expander Board
FIGURE 13-1 Moore 353 Block Diagram
Circuit Description
Display
Assembly
RS232
with
(MMJ-11)
Operator
Faceplate
Real Time Clock/Configuration
Backup Board or Removable
Configuration Board
4-20 mA
Analog
Outputs
1 & 2
Digital
Outputs
1 & 2
Rear
Connectors
26 Vdc to
Transmitters
4-20 mA
Analog
Output 3
Relay
Outputs
1 & 2
13-1
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