Register
Meaning
Access right
Storage
231
Determination of signal voltage range (mode):
Bit 0 defines the characteristic selection of the analogue interface.
–
Bit 0 = 0 characteristic: 0 – 10 V
–
Bit 0 = 1 characteristic: 2 – 10 V
Bit 4 defines the actual value signal as volume flow rate actual
value or damper blade position.
–
Bit 4 = 0 Volume flow rate actual value
–
Bit 4 = 1 Damper blade position
All other bits must not be changed.
R, W
EEPROM
568
Modbus parameter set, communication settings:
Baud rate
Parity
Stop bits
For the assignment, see the separate table
R, W
EEPROM
569
Modbus communication settings:
Modbus response time = 10 ms + delay
With delay = 3 ms × register value 0 – 255
R, W
EEPROM
572
Setting of switching threshold for override control CLOSED via control
signal for signal voltage range 2 – 10 V:
Setting range 0.5 V – 1.8 V
Default value 0.8V (register value = 20)
Resolution: 1 setting unit = 40 mV
R, W
EEPROM
Detailed information on register 122 (communication interface setpoint/actual value - Interface Mode)
Register value
Setpoint value default setting
Actual value
0
Analogue input at terminal Y; signal
voltage range 0(2) – 10 V according to
register 231
Analogue signal at terminal U; signal
voltage range 0(2) – 10 V according to
register 231
1
Modbus via Register 0
(0)2 – 10 V
2
Modbus via Register 0
Modbus register 10
3
Analogue input at terminal Y; signal
voltage range 0(2) – 10 V according to
register 231
Modbus register 10
Commissioning and operation
Configuring the Modbus interface
Control component Compact XM0 • XS0 for VAV terminal unit TVE
32
