User's Manual

Table Of Contents
6-38 InterReach Unison Accel Installation, Operation, and Reference Manual PN 9000-10
620021-0 Rev. A
6.7.3 232 Port Expander Connection
In this configuration a port expander is used to allow the connection of multiple
devices to a single PC serial port. Testing was performed with an Equinox SST-16P
Multiport Board. A DB-25 male to DB-9 female modem cable must be made to con-
nect the connector panel to the Accel Hub (refer to Appendix A.5 on page A-5). Or,
you can use a DB-25 male/DB-9 male adapter with a DB-9 female to DB-9 female
null modem cable.
Figure 6-15 OA&M Connection using a 232 Port Expander
NOTE: See Appendix A.5 on page A-5 for the modem cable wiring information.
232 Port Expander
Host Cable
Serial Expansion Card to Connector Panel
Connector Panel
DB-25 male to DB-9 female
Modem Cable
PC running
Software
AdminManager
LINK
RAU
PORT 1
LINK
RAU
PORT 2
LINK
RAU
PORT 3
LINK
RAU
PORT 4
LINK
RAU
PORT 5
LINK
RAU
PORT 6
LINK
RAU
PORT 7
LINK
RAU
PORT 8
POWER
STATUS
POWER
InterReach
Unison Accel
RS-232