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20
Table 3
Alarm & Status - Codes and Description
Alarm/
Status
Codes
Description
I/O Subsystem
L
L
Low Lithium Battery Alarm
: When
L
L
(low lithium) is displayed,
lithium battery voltage is below 2.5 VDC. A new lithium battery
measures approximately 3.6 VDC.
Communications
→
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. May
not be visible if baud rate is faster than 2400.
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.
L
Local Protocol.
Displayed when PCCU32 port is active and
running TOTALFLOW Local Protocol.
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