User manual

TD990200-0ME
10
4. Have the customer’s network communications staff assign IP
addresses and provide IP routing information for each Metasys
Ethernet Router. Record this information on the Metasys
Ethernet Router Planning Form B. (See Appendix A: Metasys
Ethernet Router Planning Forms.) Append the ARCNET
Subnet addresses from form A to form B.
5. Using the Metasys Ethernet Router Planning Form B, configure
each router by accessing its configuration screen. (See
Chapter 3.)
6. Use the assigned subnet and node addresses to address each of
the Metasys NCMs and PCs. When creating the DDL files for
the system, use the subnet and node addresses in the
NETWORK and GLOBAL DDL files.
Note: Since you are converting multiple standalone networks into
one large network, verify that no duplicate system names
exist. If duplicates exist, you must change them to unique
system names in both DDL and GPL.
If you are converting an existing system to use Metasys Ethernet
Routers, you’ll need to update and recompile the DDL files when the
routers are installed. Be sure to recompile all of the DDL files,
including all of the NC files. Failure to recompile all of the DDL
files could result in application failures for those NCMs located on
new ARCNET segments.
Design Restrictions
1. The system should not use any realtime control strategies that
require data transfers across the Ethernet network. Because the
Ethernet network may experience delays and down time caused
by non-Metasys equipment, the network is subject to variations
in performance.
Realtime control strategies can be used between NCMs located
on a common ARCNET segment.
2. Use caution when defining critical alarm reports that must cross
the Ethernet. Avoid alarms related to life safety because they
may not arrive at the Operator Workstation or printer if the
customer’s Ethernet network is down.