Digital Link DL600E, Руководство пользователя

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B-8 DL600E E1 Data Multiplexer UserÕs Guide
Communication Port Pin Assignments
Table B-8 describes the Comm Port pin assignments.
a. CTS is used by the DL600E unit as a collision avoidance line. This line should not be
connected at the CRT terminal end of the Comm Port cable.
About the DCD Signal You can enable or disable the
DCD
signal.
Enabled ÑWhen the
DCD
signal becomes inactive, this feature logs off any
user trying to log on. Otherwise, when a modem carrier drops and a user is
logged on, any other user can dial in and be logged on automatically.
When the modem carrier drops with a user logged on, the user is not logged
out. The DL600E unit continuously frees the modem screen, repainting data
and the modem does not answer dial in if receiving data.
Table B-9 lists the Comm Port parameter options.
Table B-8 Communication Port Pin (DE9) Assignments
Pin Signal
1 DCD Carrier Detect
2 SD Send Data (from DL600E to terminal)
3 RD Receive Data (from terminal to
DSU)
4 No connection
5
SG
Signal Ground (bi-directional)
6
No connection
8 No connection
8
a
CTS Clear To Send
(I/O
to all
DSU
s only)
9 No connection
Table B-9 Comm Port Parameter Options
Parameter Options
Baud rate
1200, 2400, 4800, 9600
,
14400, 19200, 28800, 38400
(DefaultÑ
9600)
Parity Even, Odd and None (DefaultÑNone)
Word length
7
or
8
(DefaultÑ
8)
Stop bits
1
or
2
(DefaultÑ
2)