RS-485 Digital Communications
114
Modline 5
EM
– Emissivity (Read / Write)
Sets Emissivity for single color units or Ratio units in 1 color mode. If the Sensor’s remote scaled
Emissivity input current is active, Sensor returns that setting ignoring any EM write command or
Rear Panel keyboard entry.
Scaled Message Value Range 100 to 1000 (Scaled value = actual value times 1000)
Actual Range: 0.1 to 1.0
MT
–
Match
Temperature (Read / Write)
Alternative method of selecting the value for Emissivity or E-Slope. The Write Message Value is the
known temperature of the target the Sensor is measuring. The unit will change Emissivity (single
color units) or E-Slope (two-color ratio units) to a value to that produces a displayed temperature
equivalent to the target temperature. The Sensor returns the required Emissivity, or E-Slope value,
if the result is in range. If the unit is unable to match the temperature then the return value is “ERR”.
The Match temperature should be set with a Sensor Response Time of 100 milliseconds or faster.
Peak Picker or Track and Hold must be Off. The Match function should be set with stable process
temperatures. After setting the Match temperature, the Response Time, Peak Picker and Track and
Hold can be set to the values required for process temperature measurement.
Write Message Range: Unit’s zero scale to full scale temperature
Reply Message Value: Emissivity or E-Slope value or ERR
TT
– Temperature (Read Only)
Returns the temperature the unit is reading in the current units. An F or C is put on the end as
appropriate. The temperature resolution is 1°F or °C.
Message Value Range: From the low end to the high end of the Sensor temperature range.
Some special readings are:
-32768(8000
16
) – Sensor Failure
-32512(8100
16
) – Unit not warmed up.
-32256(8200
16
) – Invalid
-32000(8300
16
) – Temperature too low, below Sensors range
-31744(8400
16
) – Temperature too high, above Sensor range
TO
– Temperature Only (Read Only) (Sensor firmware Versions 1.07 and higher)
Returns the temperature the unit is reading in the current units. An F or C is put on the end as
appropriate. The temperature resolution is 1°F or °C.
Message Value Range: This command only reports values that are within the Sensors temperature
range. Actual reported values are from approximately three degrees below the low end of the Sensor
temperature range to approximately three degrees above the high end of the Sensor temperature
range. Values below zero scale or above full scale are not accurate and should not be used.
There are no special readings to indicate that the temperature is out of range (too high or too low) or
invalid. Use the ST Status command to sense the temperature TO Value is under range (below the
sensor zero scale temperature) or the TO value is over range (above the full scale temperature) or
Invalid for ratio measurements.
SG
– Signal Conditioning Usage (Read Only)
Turns Peak Picker or Track and Hold on and off. Only one can be turned on at time.
Range: 0 to 2
Message Values:
0 – Peak picker and track & hold are both off.
1 – Peak picker on.
2 – Track & Hold on.
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