Honeywell CNI2 User Manual

CNI2
O
perating and Installation
Guide
80
Choosing a value that is too high may cause the application p
rogram running on the central
computer to abort or retry too often because it did not receive a response within an acceptable
period of time.
Start with a value of 50 ms and fine
-
tune it from there.
Always Send CONNECT Message
The serial device connecte
d to the CNI2 can request a call or answer an incoming call by
issuing specific “AT” commands such as “ATD” (dial) or “ATA” (answer). When the connection
with the central computer has been established the
CNI2
will send a “CONNECT” message to
the serial d
evice to let it know that the connection has been established.
The
CNI2
can also place a call on its own in response to an alarm condition or some other
event. In these situations the
CNI2
would not normally send a “CONNECT” message to the
serial device
. However some devices may require a “CONNECT” message before allowing
further communications. By checking the
Always Send Connect Message
box the
CNI2
will
always send a “CONNECT” message every time it connects with the central computer,
regardless of w
ho originated the call.
.
Always “RING” Port
In some applications the
serial device connected to the CNI2
may have been programmed to
automatically answer incoming calls. After the call is answered and a connection is established
with the central compute
r a “CONNECT” message is usually sent to the
serial
device.
In other applications the serial
device might control when incoming calls will be answered. The
CNI2
will send a number of “RING” messages to the
serial device and wait for the serial
device
to
respond with an answer (“ATA”) command. If this mode is required, check the
Always
“RING” Port
checkbox. The
CNI2
will send up to three “RING” messages to the remote device.
If an “ATA” is received the
CNI2
will respond with a “CONNECT” message. If no
response is
received the CNI
2
will send a “CONNECT” message only if the
Always Send Connect Message
box has been checked.
Use Non
-
verbose Result Codes
For AT
-
compatible modems a “verbose” message is usually a readable text string such as
“CONNECT” or “RIN
G”. A “terse”, “numeric”, or “non
-
verbose” message typically consists of
one or two numeric digits, such as “2”. The CNI
2
defaults to verbose messages, but the remote
device can change this by issuing an “ATV”
or “ATV0”
command. However some devices may
simply expect non
-
verbose messages and will not issue any additional commands to make this
happen. In this case check the
Use Non
-
verbose Result Codes
box.
Enable Blocking
This is used solely for
InvisiConnect
®
applications and is not currently suppo
rted.
Use
Alternate CONNECT Message
Usually the serial device requires some sort of notification when a connection has been
established with the central computer. Often this message will be “CONNECT xxxx”, where
“xxxx” indicates the baud rate, such as “
CONNECT 9600”. The CNI2 defaults to this format, but

Honeywell CNI2 Specifications

General

Brand	Honeywell
Model	CNI2
Category	Recording Equipment
Language	English