ABB Totalflow microFLO G4 Startup Manual page 13

Indicator
L
Low Lithium Battery Alarm: When LL (low lithium) is displayed, the lithium battery
L
voltage is below 2.5 Vdc. A new lithium battery measures approximately 3.6 Vdc.
L
Low Charger: Displayed if the µFLO
C
less than or equal to the battery voltage.
Transmitting Data: Sending a response.
→
Receiving Data: Processing request.
←
! Nak: Negative acknowledgement with packet list.
+ Ack: Positive acknowledgement of receipt of request.
Waiting for Ack: Waiting for response after transmission.
Exception Alarm Processing
?
ID Recognized: Recognized and receiving request.
Listen Cycle: Flashes if this remote port is active and running Totalflow Remote
Protocol. Flashes in sync with the listening cycle that occurs at 1, 2 or 4 second
intervals. May not be visible if the baud rate is faster than 2400. Annunciator will
remain on listening cycle if the listen cycle is set to zero.
MODBUS ASCII: MODBUS ASCII protocol selected for the port assigned to this
M
annunciator.
MODBUS RTU: MODBUS RTU protocol is selected for the port assigned to this
m
annunciator.
Local Protocol: Displayed when PCCU port is active and running Totalflow Local
L
Protocol.
¥ ID Recognized: The ID has been recognized but is waiting for sync.
B Back Flow Condition: Visible only when DP variable is displayed.
F
Z Zero Flow Condition: Visible only when the flow rate is displayed.
Hold: Displayed when PCCU32 has entered hold.
H
Alarm Condition: Need to view alarm. The user may need to compare application
A
limits to the current values to determine where the alarm condition is present.
A to D Failure: Displayed if the A to D Converter's absolute differential pressure,
absolute static pressure or temperature readings exceed the maximum counts or
A
are less than the minimum counts.
D
Description
System
G4
Communication Protocols
Measurement Applications
battery charging voltage is (+) 0.4 Vdc or is
11