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1.3 RS-232 Modular Adaptors and Cables
RS-232 modular adaptors are available from Equinox to convert RJ-45
modular jacks to DB-25 or DB-9 connectors. These modular adaptors,
used with the 10-wire reversing modular cables, perform the same
functions as shown in Figures 3 through 5. Figure 6 shows the RS-232
modular adaptors available from Equinox.
RJ-45 10-PIN
RTS
10
DTR
9
DCD
7
1 0
RD
6
5
TD
1
GND
4
CTS
1
Connect to
Modems & Multiplexers:
210097 [DB-25 DTE Male]
210098 [DB-25 DTE Female]
RJ-45 10-PIN
10
RTS
9
DTR
7
DCD
RD
6
1 0
TD
5
1
GND
4
CTS
1
Connect to
Modems & Multiplexers:
210101 [DB-9 Male]
Table 4 lists the modular cables that are available from Equinox to use
with the modular adaptors shown in Figure 6.
Part No.
Description
690252
10-foot 10-Wire Reversing Modular Cable
690253
25-foot 10-Wire Reversing Modular Cable
690254
75-foot 10-Wire Reversing Modular Cable
Table 4. Available Reversing Modular Cables
The adaptors and cables listed above may be used to attach devices to the
ESP RJ-45 ports.
If a customer-supplied modular cable is used, make sure the cable is
reversing. See Figure 7.
6
Equinox ESP Multi-Interface Serial Hub Product Installation Guide
DB-25 RS-232
RTS
4
DTR
20
DCD
8
3
RD
2
TD
7
GND
CTS
5
DB-25 RS-232
7
RTS
4
DTR
DCD
1
RD
2
TD
3
GND
5
CTS
8
Figure 6. RS-232 Modular Adaptors
RJ-45 10-PIN
10
RTS
DTR
9
DCD
7
1 0
RD
6
TD
5
1
GND
4
1
CTS
Connect to
Terminals & Printers:
210099 [DB-25 DCE Male]
210100 [DB-25 DCE Female]
RJ-45 10-PIN
RTS
10
DTR
9
DCD
7
RD
6
1 0
TD
5
1
GND
4
CTS
1
Connect to
Personal Computers:
210102 [DB-9 Female]
DB-25 RS-232
5
CTS
8
DCD
20
DTR
2
TD
3
RD
7
GND
4
RTS
6
DSR
DB-25 RS-232
8
CTS
1
DCD
4
DTR
3
TD
2
RD
5
GND
7
RTS
6
DSR
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