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MIW-DXC-FR-000 - 12 / 10 / 15 8 - 9
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REGISTRES MODBUS
INPUT REGISTERS
Data type Description Data Values
1-3 Reserved, returns 0
4CO2 level unsigned int. Actual CO2 level 0—2.000 2.000 = 2.000 ppm
5-10 Reserved, returns 0
11 Analogue output value
for CO2
signed int. Value of the analogue output 0—1.000 0 =
1.000 =
0 %
100 %
12 Relay status for CO2signed int. Relay status. When it is On, the contact between COM1 and NO1 is closed. 0—1 0 =
1 =
Off
On
13 CO2 range signed int. CO2 working range selected by jumper or holding register 1—5
1 =
2 =
3 =
4 =
5 =
450—1.850 ppm
0—1.000 ppm
0—1.500 ppm
0—2.000 ppm
Custom
14 Setpoint signed int. Setpoint selected by trimmer or holding register 14 0—2.000 2.000 = 2.000 ppm
15 Hysteresis signed int. Hysteresis for the relay switching selected by jumpers or holding register 15. 1—4
1 =
2 =
3 =
4 =
50 ppm
100 ppm
150 ppm
200 ppm
16 CO2 setpoint out of range signed int. Flag that shows if the CO2 setpoint is out of the working range 0—1 0 =
1 =
No
Yes
17 Calibration timer unsigned int. Returns passed time in per cents for 10-minute calibration procedure in progress.
When inactive, it returns 0.0—100 100 = 100 %
18-19 Reserved, returns 0
20 CO2 sensor communication
lost unsigned int. Flag that shows if the communication with CO2 sensor module is lost 0—1 0 =
1 =
No
Yes
HOLDING REGISTERS
Data type Description Data Default Values
1Device slave address unsigned int. Modbus device address 1—247 1
2Modbus baud rate unsigned int. Modbus communication baud rate 1—4 2
1 =
2 =
3 =
4 =
9.600
19.200
38.400
57.600
3Modbus parity unsigned int. Parity check mode 0—2 10 =
1 =
2 =
8N1
8E1
8O1
4Device type unsigned int. Device type (Read only)
DXC-X = 1027
5HW version unsigned int. Hardware version of the device (Read only) XXXX 0 x 0110 = HW version 1.10
6FW version unsigned int. Firmware version of the device (Read only) XXXX 0 x 0130 = FW version 1.30
7Operating mode unsigned int. Enables Modbus control and disables the jumpers and trimmers 0—1 00 =
1 = Standalone mode
Modbus mode
8Output overwrite unsigned int. Enables the direct control over the outputs. Always settable. Active only
if holding register 7 is set to 1. 0—1 00 =
1 = Disabled
Enabled
9-10 Reserved, returns 0
11 CO2 range signed int. CO2 working range. Always settable. Active only if holding register 7 is
set to 1. 1—5 1
1 =
2 =
3 =
4 =
5 =
450—1.850 ppm
0—1.000 ppm
0—1.500 ppm
0—2.000 ppm
Custom
12 Minimum custom CO2 range signed int. Minimum value of custom CO2 range. Always settable. Active only if
holding register 7 is set to 1 and register 11 is set to 5. 0—Max 01.000 = 1.000 ppm
13 Maximum custom CO2 range signed int. Maximum value of custom CO2 range. Always settable. Active only if
holding register 7 is set to 1 and register 11 is set to 5. Min—2.000 2.000 2.000 = 2.000 ppm
14 Setpoint signed int. Setpoint for the relay switching. Always settable. Active only if holding
register 7 is set to 1. 0—2.000 1.000 2.000 = 2.000 ppm
15 Hysteresis signed int. Hysteresis for the relay switching. Always settable. Active only if holding
register 7 is set to 1. 1—4 4
1 =
2 =
3 =
4 =
50 ppm
100 ppm
150 ppm
200 ppm
16 10-minute calibration signed int.
Setting this register to 1 performs 10 minutes calibration and it is
automatically cleared after the calibration. e sensor measures CO2
level for 10 minutes. and sets the lowest value of 400 ppm. Do not turn
off the device for 10 minutes, during this procedure!
0—1 01 =
0 = Start calibration
Idle
17 1-month calibration signed int.
Setting this register to 1 performs 1-month calibration and it is not
automatically cleared after the calibration. e sensor measures CO2
level for 1-month and sets the lowest value of 400 ppm. During this
procedure the device needs to be powered continuously, do not turn it
off!
0—1 01 =
0 = Start calibration
Idle
18-20 Reserved, returns 0
21 Output overwrite value signed int. Overwrite value for the analogue output. Always settable. Active
only if holding registers 7 and 8 are set to 1. 0—1.000 00 =
1.000 = 0 %
100 %
22-30 Reserved, returns 0
Pour en savoir plus à propos de Modbus sur liaison série, s'il vous plaît visitez: http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
DXC TRANSMETTEUR / COMMUTATEUR
DE CO2 POUR CONDUITS