5-5
Overview, Cont.
Table 5–1 Visual Alarm Codes, Cont.
Indicator Description Alarm?
Communication Protocols, Cont.
!
Nak. Negative Acknowledgement w/packet list.
N
+
Ack. Positive Acknowledge of receipt of request.
N
Waiting for Ack. Waiting for response after transmission.
N
?
Exception Alarm Processing.
N
ID Recognized. Recognized and receiving request.
N
Listen Cycle. Flashes if this remote port is active and running
Totalflow Remote Protocol. Flashes in sync with listening cycle
that occurs at 1, 2 or 4 second intervals.
N
M
MODBUS ASCII: MODBUS ASCII protocol selected for the port
assigned to this annunciator.
N
m
MODBUS RTU: MODBUS RTU protocol is selected for the port
assigned to this annunciator.
N
L
Local Protocol. Displayed when PCCU port is active and running
Totalflow Local Protocol.
N
¥
ID Recognized. The ID has been recognized but is waiting for
“Sync”.
N
Troubleshooting a Blank LCD Screen
When the Liquid Crystal Display is blank, this means that the unit has entered Sleep Mode.
This generally indicates the battery voltage has dropped below 10.9 VDC.
Instructions
Step
Procedure
1.
Make a local connection with the
XRC. This wakes up the unit so
that you may check all alarm conditions and determine the
problem.
2.
Check battery pack cable. It must make a good secure electrical
connection with the Main Board BAT CONN connector J16 (see
Figure 5–3).
3.
Check battery pack cable is securely connected.
4.
Check battery pack voltage. If voltage is low, replace with another
battery pack.
Continued on Next Page
Summary of Contents for XRC6490
Page 1: ...2100802 001 AB TOTALFLOW XSeries Remote Controller User s Manual ...
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Page 19: ...1 5 Standard Enclosure Cont RC 6790 X Figure 1 2 Model XRC6790 Continued on Next Page ...
Page 41: ...1 27 Totalflow Input Output Modules Cont Figure 1 16 XRC6990 Inside View ...
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Page 86: ...4 12 Replacing XRC 195 Board Cont Figure 4 5 XRC Board Connections ...
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Page 112: ...5 24 12V Communication Supply Voltage Test Cont Figure 5 9 XRC 195 Communication Wiring ...
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