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• 2-wire communication for Velbus data and 2 wires for power supply
• data transmission: 16.6 Kbit/s
• Serial data protocol: CAN (Controller Area Network)
• Short circuit proof (towards negative or positive pole of the power supply)
• LED indication when receiving or transmitting data over the Velbus
• bus error indication: 2 short flashes of the LEDs
• auto recovering after 25 seconds when a bus error occurs
The temperature controller module can be given a designation with a maximum of 16 characters.
The temperature controller module can transmit following messages:
• the current time
• the output status of the alarm clock
• the controller status
• the controller type (including software version)
• the controller name
• the communication error counter
• a program instruction
• the memory content
The temperature controller module can transmit following instructions:
• Request the:
module type (to search for sensors)
o
current time
o
memory content
o
sensor name
o
sensor set-up
o
sensor status
o
sensor temperature
o
sensor time statistics
o
program instruction
o
• Set the:
program storage location
o
program availability
o
program instruction
o
sensor zone
o
desired temperature for a sensor
o
sensor comfort temperature for heating
o
sensor day temperature for heating
o
sensor night temperature for heating
o
sensor anti-freeze temperature for heating
o
upper heat temperature
o
temperature difference for fast heating/cooling or differential thermostat
o
hysteresis temperature for a sensor
o
sensor comfort temperature for cooling
o
sensor day temperature for cooling
o
sensor night temperature for cooling
o
lower limit of the cooling preset range
o
upper limit of the cooling preset range
o
sensor calibration factor
o
low temperature alarm of a sensor
o
high temperature alarm of a sensor
o
• put the sensor in:
heating mode
o
cooling mode
o
comfort mode
o
in day mode
o
night mode
o
anti-freeze mode
o
• synchronize the alarm clock time
• lock the local sensor controls
• unlock the local sensor controls
• standard duration for temporary mode (sleep time) for a sensor
6
VELBUS CHARACTERISTICS
VMB1TC Temperature controller manual – rev 5.0
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