ADPRO FastTrace by Xtralis Installation and User Manual
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3.2.2 COMMS 2
COMMS 2 is used to connect to modems and terminal adaptors to support PSTN and ISDN links
at data rates up to 230 kbps. COMMS 2 can also be used to access the FastTrace setup menu
and to upgrade the software when connected to a PC or laptop computer via a null-modem cable
link. The 9-pin D connector pins are shown below.
Table 3: Comm Port 2 Connection
10 I
11 O
12 I
13 I
14 O
SCT 15 I DCE transmit clock
16 I
RXC 17 I DCE receive clock
18 I
19 O
DTR 20 O Data terminal ready
RL 21 O Remote loopback
RI 22 I Ring Indicator
23 I
TXC 24 O DTE Transmit Clock
25 |
Name Pin Direction Description
DCD 1 | Carrier Detect
RXD 2 | Receive Data
TXD 3 O Transmit Data
DTR 4 O Data Terminal Ready
GND 5 - Ground
DSR 6 | Data Set Ready
RTS 7 O Request to Send
CTS 8 | Clear to Send
RI 9 | Ring Indicator
V.24 Name Pin Direction V.24 Description
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