Omron CRT1 - 10-2008 Operation Manual page 314

Status Areas
CRT1-AD04 Analog
Input Unit
Warning Status Area
Master Unit The Master Unit has a Warning Status Bit and Alarm Status Bit.
The status of each of these bits is an OR status of the bits in the
status areas in the connected Slave Units.
Transmitted
to Master Unit
The Analog I/O Slave Unit has two status
areas: the Warning Status Area and the
Alarm Status Area.
The Analog Input Slave Unit's Warning Status Area contains the following
16 bits. These bits indicate minor errors in the Unit.
Bit Content
0 Reserved
1 Reserved
2 Network Power Voltage Drop Flag
OFF: Normal
ON: Error (Voltage dropped below
threshold.)
3 Unit Maintenance Flag
OFF: Normal
ON: Error (Threshold exceeded.)
4 Reserved
5 Reserved
6 Reserved
7 Reserved
8 Analog Range Exceeded Flag
OFF: Within range (below set monitor
value)
ON: Out-of-range (exceeded set moni-
tor value)
9 Cumulated Counter Exceeded Flag
OFF: Within range (below set monitor
value)
ON: Out-of-range (exceeded set moni-
tor value)
10 Reserved
11 Reserved
12 Reserved
13 Reserved
14 Reserved
15 Reserved
Analog I/O Slave Unit
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Turns ON when the voltages drops
below the voltage set for the network
power voltage monitor function.
Turns ON when the threshold set for
the Unit Conduction Time Monitor
function is exceeded.
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Turns ON when the analog data
exceeds the displayable range or
when the monitor value set for the
comparator function is exceeded.
Turns ON when cumulated value
exceeds the set monitor value.
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Section 6-2
Description
291