32
| 2105551-001 rev. AC
Indicator
Description and action
R
LevelMaster Protocol: LevelMaster protocol is selected for the port assigned
to this annunciator
L
Displayed when connected to MMI port
U
Displayed when connected to USB port
¥
Packet Protocol: the Totalflow Packet Protocol selected on this port
MODBUS®
M
MODBUS® ASCII protocol is selected for the port assigned to this
annunciator
Valve control
V
Displayed when the Valve Control option is on an Expanded I/O board (plug-
in RTU). Other Valve Control symbols do not apply
+
Positive Acknowledge of receipt of request
=
Displayed when the valve control option is installed. Process value (PV) is
within the user-set dead band.
Valve is in full open position.
Valve is in full closed position.
↑
Valve is opening. (Open signal is being sent to the valve actuator.)
↓
Valve is closing. (Close signal is being sent to the valve actuator.)
Ö
Valve RMC override conditions met (DP/SP override set point or Low
Battery)
LL
Local Lock-out is initiated.
Measurement application
H
Hold: displayed when HOLD flag is active. HOLD displays when PCCU21 is
being calibrated.
Z
Zero Flow Condition: visible only when Flow Rate is displayed.
A
Alarm Condition: need to view alarm. Compare application limits to current
values to determine where the alarm condition is present
AD
A to D Failure: displayed if A to D Converter Absolute Differential Pressure,
Absolute Static Pressure or temperature readings exceed maximum counts
or are less than minimum counts
BF
Back Flow Condition: visible only when DP variable is displayed
Other protocols
C
Local console protocol
T
Local terminal protocol or TESORO tank gauge
a ADP
protocol
b Bluetooth
listen
n Network
listen
s ScaData
protocol
x
X-Frame host annunciator
10.2 Additional assistance
For assistance, call the ABB main office number listed on the back page of this
guide.
