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Reference Manual
00809-0100-4832, Rev AA
October 2004
3-9
Rosemount 3095FC
RBX Tab
To configure the RBX, a modem must be present and appropriately
configured. Use the following steps to configure the RBX tab.
See Figure 3-5 on page 3-10.
1. Configure the Device > Comm Ports > General Tab (see “General
Tab” on page 3-8).
2. Select Device > Comm Ports > RBX Tab.
3. Enable RBX Mode. The RBX (Report-by-Exception) feature allows
the 3095FC to call in to a host PC when a configured alarm occurs.
4. Enter the RBX Host Address and Group number. The defaults of “1”
and “0” are used by most host driver software.
5. Set the Delay to define the time, in seconds, between attempts to
transmit an RBX message. There is a Delay parameter associated
with each Retry Count parameter, allowing the user to identify
different length delays for each entry.
6. The RBX Attempts #1 - 3 (Retry Count) is the number of attempts a
message is repeated if a valid response is not obtained on the first
attempt. Attempts include the initial message plus the retries. The
three Retry Count parameters each have an associated Delay
parameter. Selecting Fixed Number allows the user to enter a value
for how many times a message is retried after the first unsuccessful
attempt. Note that a “0” entry causes no retries. Selecting Continuous
causes continuous retries that can only be stopped when the host
clears the RBX alarm.
For example: If setting the Retry Count #1 to “2”, Delay #1 to “10”,
Retry Count #2 to “1” and Delay #2 to “20”, then after the first
unsuccessful attempt to communicate with the host, the 3095FC tries
two more times after waiting 10 seconds each time, and once more
after waiting 20 seconds.
7. Enabling the Extra Key On Delay to add an additional amount of time
to delay transmitting an RBX message after turning the RTS signal
on. The amount of time is fixed. This parameter is used for radio
communications.
8. RBX ACK Timeout - This is a message from the Device. If the ACK
fails to be received within the timeout period the 3095FC retries the
RBX.
NOTE
The RBX Alarm Index indicates alarms currently being reported through the
RBX. The RBX Status parameter indicates the status of RBX messaging,
either Active or Inactive. Active indicates that an SRBX alarm is being
processed.
9. After configuring the RBX function, use Device > Flags > Flash
Memory Save Configuration to save the configuration to the Flash
Memory in case a Cold Start must be performed.