
Chapter 2
The PLC-5 802.4 MAP/OSI Coprocessor
2-4
Non–volatile memory is a portion of memory in the OSI coprocessor
where the following information is stored:
the system load file (the OSI software)
the Local Directory Information Base (LDIB) entries
other configurable parameters (all MAC–, MMS–, and system–layer
parameters, network–layer static routing table, transport– and
session–layer buffer information, and RS–232 port configuration
parameters)
MMS objects you have saved
Through the Allen–Bradley MAP Station Manager, you download the OSI
software, manage LDIB entries, configure parameters, and save MMS
objects. The OSI software image, the LDIB entry information, and the
configurable parameters are automatically stored in the OSI coprocessor’s
non–volatile memory. You have the option of also saving MMS objects
through the station manager’s Retain MMS Objects menu. Refer to the
station manager’s user manual (publication 6630–6.5.2) for more
information.
The Lithium Battery
You received one 3.6 volt lithium battery (cat. no. 1785–U1) with your
shipment of the OSI coprocessor (figure 2.3).
Figure 2.3
The PLC-5 OSI Coprocessor Lithium Battery
Battery
19223
Battery Cover
Inline
connector
Battery
wiring harness
The battery provides the power necessary to retain the information in
non–volatile memory during the time power is not supplied to the OSI
coprocessor. Refer to publications 1785–2.23 and 1785–2.24 for
installation instructions and precautionary information.
Non-volatile Memory and
the Lithium Battery
Содержание PLC-5 MAP/OSI
Страница 1: ...PLC 5 MAP OSI Software User Manual Cat No 1785 OSI AB Parts...
Страница 4: ...Table of Contents iii OSI Layer Management E 1...
Страница 57: ...Chapter 4 Basic Programming Techniques 4 7 For example B7 6 10 AB Parts...
Страница 91: ...Mapping MMS Data Types onto PLC 5 40 5 60 File Types Appendix A A 2 T ACC D 16 AB Parts...