Calex PMB21 Operator's Manual - Page 7
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LIST OF MODBUS REGISTERS
The list below includes all available addresses on the PyroMiniBus sensor.
R = Read, W = Write
Address
Length (words)
0x00
1
0x01
1
0x02
2
0x04
1
0x05
1
0x06
1
0x07
1
0x08
1
0x09
1
0x0A
1
0x0B
1
0x0C
1
0x0D
1
0x0E
1
0x0F
1
0x10
1
0x11
1
0x16
1
0x17
1
Notes:
1
All temperature are in tenths of degrees C
2
With the exception of addresses 0x16 and 0x17, all write operations are saved to non-
volatile memory
3
For further information please refer to http://www.modbus.org/specs.php
4
Use address 255 to communicate with any connected sensor (only one sensor
connected)
5
Use address 0 to broadcast to all connected sensors (no response expected)
Description
Sensor Type (17 for PyroMiniBus)
Field of view 0 for 2:1; 1 for 20:1
Serial number
Modbus slave ID (slave address)
Reflected Energy Compensation 0 for Off; 1 for On
Reflected Temperature
Emissivity Setting (1 LSB = 0.0001)
Minimum 0.2000, Maximum 1.0000
Hold Mode 0 for Off; 1 for Peak; 2 for Valley
Hold Period (1 LSB = 0.1 seconds)
Minimum 0.1 seconds, Maximum 1200.0 seconds
Average Period (1 LSB = 0.1 seconds)
Minimum 0.1 seconds, Maximum 60.0 seconds
Average Temperature
Minimum Temperature
Maximum Temperature
Filtered Temperature
Unfiltered Temperature
Sensor Temperature
Status (bits active high)
Bit 0: Measurement error
Bit 1: Sensor temperature low
Bit 2: Sensor temperature high
Bit 3: Object temperature low
Bit 4: Object temperature high
Reflected Temperature (not saved to non-volatile
memory)
Emissivity Setting (not saved to non-volatile
memory)
R/W
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R
R/W
R/W
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