4 Control Modules—Network Control Module 200 Series
The Migration Functionality program set builds pathways from the
NCM200 to other systems. While it can support any of the Standard
Functionality program sets described earlier, Migration Functionality can
also connect one of the following applications to Metasys:
•
S2 Migration software brings JC/85 field gear, object information, and
control directly into Metasys from the JC/85 trunks.
•
JC/85 Gateway allows Metasys object information to integrate with
the JC/85 Central Processing Unit (CPU). In the Gateway application,
the NCM serves as a high-level protocol translator, making Metasys
object information available to a JC/85 headend.
•
The Network Port application lets you monitor and control the
Metasys system from a third-party host. The host computer must be
able to communicate with an ALLEN-BRADLEY PLC-5®
(Programmable Logic Controller). The host, in turn, communicates
with the Network Port, which emulates some features of a PLC-5.
Note: For complete information about the Network Port, refer to the
Network Port Technical Bulletin (LIT-6295050) in the Metasys
Connectivity Technical Manual (FAN 629.5).
The NCM200 is a microprocessor-based intelligent node in the Metasys
Network. It integrates three streams of information:
•
system and data base information
•
application programs
•
data and I/O information arriving from the communication ports
Figure 1 illustrates the basic components and functions of the NCM200.
N1 LAN
N2 Bus Lines
Operator
Workstation
TBC
Microprocessor
Clock/Calendar
RS-232 Port
NT Port
Communications
Submodule Slot
Battery
Submodule
Network Identity
Module Slot
Reset Button
Optional L2
Bus Lines
NIM: Memory and
Functionality
N2 Interface
1
5
200TC1
N1 Interface
12
6
3
8
9
10
13
Figure 1: Block Diagram of the NCM200
Theory of
Operation
