Emerson Micro Motion 3711, Configuration And Use Manual, Page: 40 / 234

32 Micro Motion
®
Model 3711 Gas Flow Computers
Setting Up Communications
6. In the Advanced panel, set connection parameters as desired (see Table 4-4).
7. Click
Apply
, then click
OK
.
4.6 Configuring communications for RBX alarming
Report By Exception (RBX) alarming can be configured for analog inputs, analog outputs, and pulse
inputs (see Chapter 7), and for flow alarms (see Section 6.5.1). If RBX alarming is enabled, the
Model 3711 will send a message through the specified comm port when an alarm occurs.
Note: It is the user’s responsibility to ensure that the comm port connects to an appropriate receiving
device.
If RBX alarming will be enabled for any of the functions listed above, a communications port must be
configured for RBX alarming. To configure a communications port for RBX alarming:
1. Connect to the Model 3711.
2. Click
Device > Comm Ports
. The Comm Port dialog box shown in Figure 4-1 is displayed.
3. Use the dropdown list to select the comm port that will be used for RBX alarming.
4. Ensure that all parameters on the General panel are correctly set for this comm port (see
Table 4-1).
5. If you are using the dial-up modem for RBX alarming, ensure that all parameters on the
Modem tab are correctly set (see Table 4-2).
6. Click the
RBX
tab. The panel shown in Figure 4-5 is displayed.
Table 4-4 ROCLINK 800 Communication Parameters – Advanced panel
Parameter Description Comments
Number of
Retries Specify the number of times that ROCLINK 800 will request
data from the Model 3711, before reporting a timeout error, if
the initial request fails. Range: 0 to 25
Time Out Specify the number of seconds that ROCLINK 800 will wait
between retries, if the initial request fails. Do not enter 0 in this field.
Tx Delay Specify the number of seconds that will elapse between the
time the RTS line is enabled and the time that data transmission
begins. A non-zero delay is required for
radio communications. For other
communications, set to 0 initially,
then add delay as required.
Key Off Delay Specify the number of seconds that will elapse between the
time that message transmission is finished and the time that the
RTS signal is turned off. Set to 0 initially, then add delay as
required.
Host CRC Check • Enabled: ROCLINK 800 will apply Cyclical Redundancy
Checking (CRC) error checking to messages sent and
received through this comm port.
• Disabled: ROCLINK 800 will not apply CRC error checking.