Honeywell CNI2 User Manual

CNI2
O
perating and Installation
Guide
81
the serial device can change this to a simple “CONNECT” message by issuing an “ATX”
command. However some serial devices may simply expect a simple “CONNECT” message
and will not issue any additional c
ommands to make this happen. In this case check the
Edit
CONNECT Message
box.
You must specify the exact message in the
Connect Message
window. This includes non
-
readable (control) characters. Non
-
verbose responses are often one to two ASCII numbers
followed by a carriage return character. Verbose messages are normally preceded and
followed by a carriage return and line feed combination. Use the “Enter” key on your keyboard
to insert a carriage return and line feed combination. To insert a single l
ine feed character press
and hold the ALT key while on the keyboard’s numeric keypad enter the digits 0 1 0. Then
release the ALT key. To insert a single carriage return character press and hold the ALT key
while on the keyboard’s numeric keypad enter th
e digits 0 1 3. Then release the ALT key. In
either case you will not actually see the characters in the window, but you may see the cursor
move to the next line.
Connect on DTR High
Some serial devices may indicate a desire to place a call by
simply
a
ctivating a control line. On
the CNI2’s TB2 terminal block is an input line called DTR.
If the DTR input line on the
communications terminal block goes positive, the CNI
2
will wait 10 seconds for an “ATD” (dial)
or “ATA” (
answer) command from the
device.
If
a command is
received the CNI
2
will
start the
call process.
Otherwise a call will be placed
after 10 seconds
and the
CNI2
will behave
according to the
Always Send Connect Message
setting. If enabled
a “CONNECT” message
will be sent to
the serial
dev
ice once the connection with the central computer has been
established. The call will end with a “NO CARRIER” message. If the connection cannot be
established a “NO CARRIER” message is returned.
As discussed
earlier
two remote devices can be wired to t
he same CNI
2 using the
optional
Serial P
ort
M
ultiplexer board. Either remote device can raise the DTR line but the CNI
2
will not
be able to determine which device is actually asserting the line. If the wrong port is selected
when this happens the CNI
2
may not see the “ATD” command if the remote device issues one.
NOTE
When the CNI2 is in low
-
power “sleep” mode it can only detect that the DTR line has gone
active
if the JP3
-
2 jumper is in the “A
-
B” position. See the next illustration.

Honeywell CNI2 Specifications

General

Brand	Honeywell
Model	CNI2
Category	Recording Equipment
Language	English