ABB Totalflow mflo Series Startup Manual page 17

Alarm/
Status
Codes
L
Low Lithium Battery Alarm: When
L
lithium battery voltage is below 2.5 VDC. A new lithium battery
measures approximately 3.6 VDC.
L
Low Charger: Displayed if battery charging voltage is less than
C
0.4 VDC greater than the battery voltage.
→
Transmitting Data:
←
Receiving Data:
!
Nak. Negative Acknowledgement w/packet list.
+
Ack. Positive Acknowledge of receipt of request.
Waiting for Ack. Waiting for response after transmission.
?
Exception Alarm Processing.
ID Recognized.
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.
M
MODBUS ASCII: Modbus ASCII protocol is selected for the
port assigned to this annunciator.
m
MODBUS RTU: Modbus RTU protocol is selected for the port
assigned to this annunciator.
Description
I/O Subsystem
Communications
L (low lithium) is displayed,
L
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