Chapter 5: Using the Web Interface
129
"normal" State
This state indicates the sensor is in the normal state.
For a contact closure sensor, this state is the normal state you have set.
If the normal state is set to Normally Closed, the
normal
state means
the contact closure switch is closed.
If the normal state is set to Normally Open, the
normal
state means
the contact closure switch is open.
Note: See
Configuring a Contact Closure Sensor
(on page 28) for
setting the normal state.
"alarmed" State
This state means a discrete (on/off) sensor is in the "abnormal" state.
For a contact closure sensor, the meaning of this state varies based on the
sensor's normal state setting.
If the normal state is set to Normally Closed, the
alarmed
state means
the contact closure switch is open.
If the normal state is set to Normally Open, the
alarmed
state means
the contact closure switch is closed.
Note: See
Configuring a Contact Closure Sensor
(on page 28) for
setting the normal state.
Tip: A contact closure sensor's LED is lit after entering the
alarmed
state. If
the sensor module has two channels for connecting two switches, two
LEDs are available. Check which contact closure switch is in the
"abnormal" status according to the channel number of the LED.
"ok" State
Only a numeric sensor shows this state. This state means the sensor
reading is within the acceptable range as indicated below:
Lower Non-Critical threshold <= Reading < Upper Non-Critical
threshold
Note: The symbol <= means smaller than (<) or equal to (=).
"below lower critical" State
This state means a numeric sensor's reading is below the lower critical
threshold as indicated below:
Reading < Lower Critical Threshold
