Chapter 1
Overview of the MAP Communication
Environment
1-9
Figure 1.9
An MMS Server Makes Resources Available to an MMS Client
OSI Network
An MMS
client device
accesses
resources in the server device
using MMS services.
An MMS
server device
makes resources available for
the client to use.
VMD
Resources
domain objects
program invocation objects
variable objects
MMS Client
MMS Server
I - 12414
Clients, Servers, the VMD Model, and Your OSI Coprocessor
Your OSI coprocessor has the ability to act as both MMS server and client,
depending on the particular MMS service. It is your PLC–5 controller that
is modeled as a VMD.
The coprocessor and its OSI software make the PLC–5 controller’s
resources accessible to MMS client devices because the OSI software
supports the MMS VMD model (figure 1.10).
Summary of Contents for PLC-5 MAP/OSI
Page 1: ...PLC 5 MAP OSI Software User Manual Cat No 1785 OSI AB Parts...
Page 4: ...Table of Contents iii OSI Layer Management E 1...
Page 57: ...Chapter 4 Basic Programming Techniques 4 7 For example B7 6 10 AB Parts...
Page 91: ...Mapping MMS Data Types onto PLC 5 40 5 60 File Types Appendix A A 2 T ACC D 16 AB Parts...