Johnson Controls NCM350 User Manual

Network Control Module 300 Series Technical Bulletin 7
Key Concepts
NCM
The NCM is a microprocessor-based intelligent node in the
Metasys network. It integrates three streams of information:
• system and database information
• application programs
• data and Input/Output (I/O) information arriving from the
communication ports
Figure 1 illustrates the basic components and functions of the NCM,
including callouts referenced throughout this document.
Note: NCM350-8s do not have Single Inline Memory Module
(SIMM) banks on the circuit board. They are delivered from the
factory with their maximum 8 MB of RAM.
12
6
2
RS-232
Port 4
NT
Port 4
Reload
Button
1
SIMMs
Nc3_1
Clock/
Calendar
Battery
Pack
Connector
J1J2J3J4
Power Supply
Connection
XMIT
RECV
LEDs
RS-232
Port 3
RS-232
Port 2
Battery
Pack
REF N2 N2
-
+
Power and
Battery
LEDs
Memory
Configuration
and EOL
Switches
XMIT
RECV
LEDs
XMIT
RECV
LEDs
XMIT
RECV
LEDs
N2
Port 1
4
3
5
7
8
9
10
11
PAL
Bank 1Bank 2
Figure 1: Block Diagram of the NCM

Johnson Controls NCM350 Specifications

General

Brand	Johnson Controls
Model	NCM350
Category	Control Unit
Language	English