
6 VMB1TC Temperature controller manual – rev 5.0
VELBUS CHARACTERISTICS
• 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:
o 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
• Set the:
o 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
• put the sensor in:
o heating mode
o cooling mode
o comfort mode
o in day mode
o night mode
o anti-freeze mode
• 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
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