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Operation
Status Indicators
Release F UMC800 Controller Installation and User Guide 59
4/01
Number of analog input cards Time to complete one full
scan
(in milliseconds)
8 1700
9 1900
10 2100
11 2300
12 2500
13 2700
14 2900
15 3100
16 3300
Status Indicators
Status LEDs
Four LEDs on the CPU module (shown in Figure 30) indicate the operating status of the controller and are
described in Table 18.
Table 18 Controller status LEDs
Designation State Indication
POWER
Steady on Power is applied to the controller backplane.
Blinking
Diagnostic indication. See NOTE.
LoBAT
On The CPU battery is low and needs replacement.
FORCE
On One or more function block output values have been forced.
RUN
On Controller is in RUN mode.
Blinking Controller is in OFFLINE mode
Off Controller is in PROGRAM mode.
OR
If POWER LED is blinking a fault has been detected in
controller. See NOTE.
NOTE: See Table 20 for the details of the indications and their meaning.