Section 50
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Register 40001 Value Description
Register 40,001 is a read-only register. This register holds the model number of the hardware.
If you are using multiple Comm modules, it is sometimes helpful to confirm that you are
communicating with the expected module type. In this case, it will return 279.
Register 40042 Value Description
Register 40,042 is a read-only register. This register displays the readings of the frequency
input (magnetic pickup) in hertz (Hz).
Register 40045 – 40064 Value Description
Registers 40,045 – 40,064 are read-only registers. The values returned in these registers are
signed 16 bit data. These channels are the actual readings from the source device.
Thermocouple channels are shown in degF x 10. For example, a read value of 1200 means
120°F is being read.
NOTE
: These values are not averaged before they are updated in the
MX4. The device reading these values must perform some sort of
averaging to filter out sporadic erroneous reading.
Register 40067 – 40084 Value Description
Registers 40,067 – 40,084 are read-only registers. The values returned in these registers are
signed 16 bit data. These channels are the median average readings from the source device.
This will require approximately 400ms for an accurate reading on initial power. Thermocouple
channels are shown in degF x 10. For example, a read value of 1200 means 120°F is being
read.
NOTE
: These values are averaged in the MX4. These readings are used
for the displayed temperatures as they eliminate the sporadic readings
typically delivered by thermocouple devices.
Register 40088 – 40105 Value Description
Registers 40,088 – 40,105 are read/write registers. This will allow you to configure what type
of sensor is attached to each channel. The module will return a value in engineering units. Use
the list below to determine what value you should write based on the sensor installed.
0 – Type J thermocouple
1 – Type K thermocouple