Johnson Controls 300 Series Manual page 24

24 Network Control Module 300 Series Technical Bulletin
Replacing an NCM401 with an NCM300
Because Port 1 of the NCM300 is always the built-in N2, you must
move the S2 trunk from Port 1 on an NCM401 to Port 2 on the
NCM300.
For applications combining dial-up and S2, the NCM350 running
Metasys Release 8.0 or later software supports modems on Port 5 or 6.
Internal modems are not recommended. See the ISA Bus Cards section
of this document. See Replacing an NCM401 with an NCM300 in
Detailed Procedures for replacement steps.
Software Configurations
The NCM300 requires Release 6.0 or later of Metasys software. The
NCM350 requires Release 8.0 or later of Metasys software. The
NCM350-8 requires Release 9.01 or later of Metasys software to get
the full use of the 8 MB of memory. Metasys software Release 8.0
through Release 9.0 only recognize an NCM350-8 as having 6 MB of
memory because there was no 8 MB option at those releases.
The NCM Software Options Technical Bulletin (LIT-636023) indicates
the software configurations that can be downloaded into each NCM
base hardware option, and which Metasys hardware devices can be
connected to the specific NCM configurations.
For information on the Fire-Net NCM, refer to Appendix A: Fire-Net
NCM in this document.
NCM Capacity
The allocated memory is the database memory. The acquired memory
is temporary memory. Table 9 shows the amounts of allocated and
acquired memory are available on the NCM, according to the four
levels of available DRAM. Table 10 describes NCM functionality.
Table 9: NCM Memory Capacity
DRAM Size Allocated
(Database Memory)
2 MB 580 KB
4 MB 2 MB
6 MB 4 MB
8 MB 6 MB
10 MB 8 MB
Note: Only the 8 MB option applies to NCM350-8.
Acquired
(Temporary Memory)
150 KB
300 KB
300 KB
300 KB
300 KB