Operating Instructions

A6V11439451_----_c 17
Engineering parameters
Item Description Range Factory settings
MODA
Modbus address
setting
1…247 1
MODB
Modbus baud rate
setting
1: 9600 bps
2: 19200 bps
3: 38400
bps
2: 19200 bps
MODF
Modbus data frame
format
0: 1/8/E/1
1: 1/8/O/1
2: 1/8/N/1
3: 1/8/N/2
0: 1/8/E/1
APP
Application selection 1: PM2.5 control only
2: PM2.5 + CO2 control
3: CO2 control only
4: Ventilation
1: PM2.5 control
only
DISP
Symbol display
enable/disable
0: Disable display
1: Enable display
1) Room Temp= 1;
2) Outside
Temp= 0;
3) PM2.5= 1;
4) VOC= 0;
5) CO2= 0;
6)
RH
=
0;
SEN1
1)
External sensor1 type
selection
0: No function
1: Temperature (AI)
(NTC 10k)
2: Temperature (AI)
(0…10 V)
3: PM2.5 (AI) μg/m
3
(0…10 V)
4: CO2 (AI) ppm (0…10 V)
5: VOC (AI) % (0…10 V)
3: PM2.5 (AI)
μg/m
3
(0…10 V)