# Commands cheat sheet

A clean cheat sheet for those who are already familiar with the communication protocol of the device.

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The **Command name** is a clickable link that takes you to the specific command section in the document.
{% endhint %}

<table data-header-hidden><thead><tr><th width="126.33333333333331"></th><th width="106"></th><th width="384"></th><th></th></tr></thead><tbody><tr><td><strong>Command code, [HEX]</strong></td><td><strong>Firmware version</strong></td><td><strong>Command name</strong></td><td><strong>Sent by</strong></td></tr><tr><td>01</td><td>All</td><td><a href="keep-alive"><strong>Keep-alive</strong></a></td><td>End device</td></tr><tr><td>02</td><td>All</td><td><a href="../keep-alive#this-command-is-used-to-set-the-fcts-keep-alive-message-period-the-keep-alive-data-in-the-example-is"><strong>Set keep-alive period</strong></a></td><td>Server</td></tr><tr><td>03</td><td>All</td><td><a href="../on-off-and-target-temperature#you-can-set-the-target-temperature-step-with-the-command"><strong>Set target temperature step</strong></a></td><td>Server</td></tr><tr><td>04</td><td>All</td><td><a href="../general-display-and-power-recovery#get-firmware-and-hardware-version"><strong>Read device hardware and software version</strong></a></td><td>Server/ End device</td></tr><tr><td>05</td><td>All</td><td><a href="../on-off-and-target-temperature#this-command-gets-the-target-temperature-step.-the-keepalive-data-in-the-example-below-is-omitted-fo"><strong>Get target temperature step</strong></a></td><td>Server/ End device</td></tr><tr><td>07</td><td>All</td><td><a href="../keys-lock#you-can-disable-one-or-a-combination-of-keys-with-the-command"><strong>Set keys locked</strong></a></td><td>Server</td></tr><tr><td>08</td><td>≤ 1.5 and ≥ 1.8</td><td><a href="../on-off-and-target-temperature/target-temperature-ranges#set-6"><strong>Set target temperature range</strong></a></td><td>Server</td></tr><tr><td>10</td><td>All</td><td><a href="../general-display-and-power-recovery/network-related-settings#this-command-is-used-to-set-the-period-t-of-lorawan-join-request-sending-from-the-end-node-device.-t"><strong>Set network join retry period</strong></a></td><td>Server</td></tr><tr><td>11</td><td>All</td><td><a href="../general-display-and-power-recovery/network-related-settings/uplink-types#this-command-is-used-to-set-fan-coil-thermostat-uplink-message-type."><strong>Set uplink messages type</strong></a></td><td>Server</td></tr><tr><td>12</td><td>All</td><td><a href="../keep-alive#this-command-is-used-to-get-the-fcts-keep-alive-message-period-the-keep-alive-data-in-the-example-is"><strong>Get keep-alive period</strong></a></td><td>Server/ End device</td></tr><tr><td>14</td><td>All</td><td><a href="../keys-lock#this-command-gets-which-keys-have-been-disabled."><strong>Get keys locked</strong></a></td><td>Server/ End device</td></tr><tr><td>15</td><td>≤ 1.5 and ≥ 1.8</td><td><a href="../on-off-and-target-temperature/target-temperature-ranges#get-6"><strong>Get target temperature range</strong></a></td><td>Server/ End device</td></tr><tr><td>16</td><td>≥ 1.6</td><td><a href="../on-off-and-target-temperature/target-temperature-ranges#set-2"><strong>Set heating and cooling target temp. ranges</strong></a></td><td>Server</td></tr><tr><td>17</td><td>≥ 1.6</td><td><a href="../on-off-and-target-temperature/target-temperature-ranges#get-2"><strong>Get heating and cooling target temp. ranges</strong></a></td><td>Server/ End device</td></tr><tr><td>19</td><td>All</td><td><a href="../general-display-and-power-recovery/network-related-settings#this-command-is-used-to-get-the-period-t-of-lorawan-join-request-sending-from-the-end-node-device.-t"><strong>Get network join retry period</strong></a></td><td>Server/ End device</td></tr><tr><td>1B</td><td>All</td><td><a href="../general-display-and-power-recovery/network-related-settings/uplink-types#this-command-is-used-to-get-fan-coil-thermostat-uplink-messages-type."><strong>Get uplink messages type</strong></a></td><td>Server/ End device</td></tr><tr><td>1C</td><td>All</td><td><a href="../general-display-and-power-recovery/network-related-settings#this-command-is-used-to-set-independent-radio-watch-dog-configurations-for-confirmed-and-unconfirmed"><strong>Set device radio communication watch-dog parameters</strong></a></td><td>Server</td></tr><tr><td>1D</td><td>All</td><td><a href="../general-display-and-power-recovery/network-related-settings#this-command-is-used-to-get-the-radio-watch-dog-configurations."><strong>Get device radio communication watch-dog parameters</strong></a></td><td>Server/ End device</td></tr><tr><td>2E</td><td>All</td><td><a href="../on-off-and-target-temperature#you-can-set-the-target-temperature-with-the-command"><strong>Set target temperature</strong></a></td><td>Server</td></tr><tr><td>2F</td><td>All</td><td><a href="../on-off-and-target-temperature#this-command-gets-the-target-temperature.-the-keepalive-data-in-the-example-below-is-omitted-for-cla"><strong>Get target temperature</strong></a></td><td>Server/ End device</td></tr><tr><td>30</td><td>All</td><td><a href="../on-off-and-target-temperature#manual-change-from-the-thermostats-buttons"><strong>Manual target temperature change</strong></a></td><td>End device</td></tr><tr><td>31</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#set-the-valve-open-time."><strong>Set valve open/ close time</strong></a></td><td>Server</td></tr><tr><td>32</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#get-the-valve-open-time."><strong>Get valve open/ close time</strong></a></td><td>Server/ End device</td></tr><tr><td>33</td><td>All</td><td><a href="../general-display-and-power-recovery/hiding-data-from-the-display-and-settings#this-command-sets-the-full-display-refresh-period."><strong>Set full display refresh period</strong></a></td><td>Server</td></tr><tr><td>34</td><td>All</td><td><a href="../general-display-and-power-recovery/hiding-data-from-the-display-and-settings#this-command-gets-the-full-display-refresh-period."><strong>Get full display refresh period</strong></a></td><td>Server/ End device</td></tr><tr><td>35</td><td>All</td><td><a href="../external-temperature-measurement#this-command-activates-deactivates-the-automatic-temp.-control-mode-with-external-temp.-reading."><strong>Set automatic temperature control mode with external temperature reading</strong></a></td><td>Server</td></tr><tr><td>36</td><td>All</td><td><a href="../external-temperature-measurement#this-command-gets-whether-automatic-temp.-control-mode-with-external-temp.-reading-is-enabled-or-dis"><strong>Get automatic temperature control mode with external temperature reading</strong></a></td><td>Server/ End device</td></tr><tr><td>3B</td><td>All</td><td><a href="../external-temperature-measurement#2.1-set-external-temperature-sensor-value-with-resolution-1.0-c"><strong>Set external temperature sensor value with resolution 1°C</strong></a></td><td>Server</td></tr><tr><td>3C</td><td>All</td><td><a href="../external-temperature-measurement#you-can-set-the-external-temperature-with-the-command"><strong>Set external temperature sensor value with resolution 0.1°C</strong></a></td><td>Server</td></tr><tr><td>3E</td><td>All</td><td><a href="../external-temperature-measurement#when-the-fan-coil-thermostat-is-in-automatic-temperature-control-mode-with-external-temperature-read"><strong>Get external temperature sensor value with resolution 0.1°C</strong></a></td><td>Server/ End device</td></tr><tr><td>40</td><td>All</td><td><a href="../general-display-and-power-recovery/hiding-data-from-the-display-and-settings#this-command-shows-hides-the-measured-temperature-on-the-display."><strong>Set flag show/hide measured temperature</strong></a></td><td>Server</td></tr><tr><td>41</td><td>All</td><td><a href="../general-display-and-power-recovery/hiding-data-from-the-display-and-settings#check-whether-the-measured-temperature-is-shown-hidden."><strong>Get flag show/hide measured temperature</strong></a></td><td>Server/ End device</td></tr><tr><td>42</td><td>All</td><td><a href="../general-display-and-power-recovery/hiding-data-from-the-display-and-settings#this-command-shows-hides-the-measured-humidity-on-the-display."><strong>Set flag show/hide humidity</strong></a></td><td>Server</td></tr><tr><td>43</td><td>All</td><td><a href="../general-display-and-power-recovery/hiding-data-from-the-display-and-settings#check-whether-the-measured-temperature-is-shown-hidden.-1"><strong>Get flag show/hide humidity</strong></a></td><td>Server/ End device</td></tr><tr><td>44</td><td>All</td><td><a href="../fan-settings#you-can-set-the-fan-speed-with-the-command"><strong>Set fan speed</strong></a></td><td>Server</td></tr><tr><td>45</td><td>All</td><td><a href="../fan-settings#this-command-gets-the-ecm-fan-speed.-the-keepalive-data-in-the-example-below-is-omitted-for-clarity."><strong>Get fan speed</strong></a></td><td>Server/ End device</td></tr><tr><td>46</td><td>All</td><td><a href="../fan-settings#you-can-set-the-fan-speed-limit-with-the-command"><strong>Set fan speed limit</strong></a></td><td>Server</td></tr><tr><td>47</td><td>All</td><td><a href="../fan-settings#this-command-gets-the-target-temperature.-the-keepalive-data-in-the-example-below-is-omitted-for-cla"><strong>Get fan speed limit</strong></a></td><td>Server/ End device</td></tr><tr><td>48</td><td>All</td><td><a href="../fan-settings#the-command-adjusts-the-voltage-range-of-the-ecm-fan."><strong>Set ECM fan min/max voltage</strong></a></td><td>Server</td></tr><tr><td>49</td><td>All</td><td><a href="../fan-settings#the-command-extracts-the-voltage-range-of-the-ecm-fan."><strong>Get ECM fan min/max voltage</strong></a></td><td>Server/ End device</td></tr><tr><td>4A</td><td>All</td><td><a href="../fan-settings#set-up-the-the-start-up-time."><strong>Set ECM fan start up time</strong></a></td><td>Server</td></tr><tr><td>4B</td><td>All</td><td><a href="../fan-settings#get-up-the-the-start-up-time."><strong>Get ECM fan start up time</strong></a></td><td>Server/ End device</td></tr><tr><td>4C</td><td>All</td><td><a href="../fan-settings#set-the-ecm-relay-to-activated-deactivated."><strong>Set ECM fan Relay (F-ON) - activated/deactivated</strong></a></td><td>Server</td></tr><tr><td>4D</td><td>All</td><td><a href="../fan-settings#get-the-status-of-the-ecm-relay."><strong>Get ECM fan Relay (F-ON) - activated/deactivated</strong></a></td><td>Server/ End device</td></tr><tr><td>4E</td><td>All</td><td><a href="../general-display-and-power-recovery/frost-protection#set-the-frost-protection-status."><strong>Set frost protection status - ON/OFF</strong></a></td><td>Server</td></tr><tr><td>4F</td><td>All</td><td><a href="../general-display-and-power-recovery/frost-protection#get-the-frost-protection-status."><strong>Get frost protection status  - ON/OFF</strong></a></td><td>Server/ End device</td></tr><tr><td>50</td><td>All</td><td><p><a href="../general-display-and-power-recovery/frost-protection#set-the-frost-protection-set-point-and-threshold."><strong>Set frost protection threshold and setpoint temperatures</strong></a></p><p></p></td><td>Server</td></tr><tr><td>51</td><td>All</td><td><a href="../general-display-and-power-recovery/frost-protection#get-the-frost-protection-set-point-and-threshold."><strong>Get frost protection threshold and setpoint temperatures</strong></a></td><td>Server/ End device</td></tr><tr><td>52</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#you-can-set-the-operational-mode-with-the-command"><strong>Set operation mode</strong></a></td><td>Server</td></tr><tr><td>53</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#this-command-gets-the-operational-mode."><strong>Get operation mode</strong></a></td><td>Server/ End device</td></tr><tr><td>54</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#you-can-set-the-allowed-operational-mode-with-the-command"><strong>Set allowed operating modes</strong></a></td><td>Server</td></tr><tr><td>55</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#this-command-gets-the-allowed-operating-mode."><strong>Get allowed operating modes</strong></a></td><td>Server/ End device</td></tr><tr><td>56</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/occupancy-sensor#set"><strong>Set cooling set-point unoccupied</strong></a></td><td>Server</td></tr><tr><td>57</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/occupancy-sensor#get"><strong>Get cooling set-point unoccupied</strong></a></td><td>Server/ End device</td></tr><tr><td>58</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/occupancy-sensor#set-1"><strong>Set heating set-point unoccupied</strong></a></td><td>Server</td></tr><tr><td>59</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/occupancy-sensor#get-1"><strong>Get heating set-point unoccupied</strong></a></td><td>Server/ End device</td></tr><tr><td>5A</td><td>All</td><td><a href="../on-off-and-target-temperature#this-command-is-used-to-set-the-compensation-temperature-values."><strong>Set sensor compensation temperature</strong></a></td><td>Server</td></tr><tr><td>5B</td><td>All</td><td><a href="../on-off-and-target-temperature#this-command-is-used-to-get-the-compensation-temperature-values."><strong>Get sensor compensation temperature</strong></a></td><td>Server/ End device</td></tr><tr><td>5C</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/occupancy-sensor#you-can-set-the-fan-speed-with-the-command"><strong>Set fan speed not occupied</strong></a></td><td>Server</td></tr><tr><td>5D</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/occupancy-sensor#this-command-gets-the-target-temperature.-the-keepalive-data-in-the-example-below-is-omitted-for-cla"><strong>Get fan speed not occupied</strong></a></td><td>Server/ End device</td></tr><tr><td>5E</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/automatic-changeover#the-command-enables-disables-automatic-changeover."><strong>Set automatic changeover status - on/off</strong></a></td><td>Server</td></tr><tr><td>5F</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/automatic-changeover#get-the-automatic-changeover-status."><strong>Get automatic changeover status - on/off</strong></a></td><td>Server/ End device</td></tr><tr><td>60</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#you-can-set-the-target-applications-with-the-command"><strong>Set application</strong></a></td><td>Server</td></tr><tr><td>61</td><td>All</td><td><a href="../../wiring-diagrams-applications-and-operational-modes#this-command-gets-the-application.-the-keepalive-data-in-the-example-below-is-omitted-for-clarity."><strong>Get application</strong></a></td><td>Server/ End device</td></tr><tr><td>62</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#you-can-set-the-function-of-digital-input-output-occ-with-the-command"><strong>Set function of digital input/output (OCC)</strong></a></td><td>Server</td></tr><tr><td>63</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#this-command-gets-the-heating-setpoint.-the-keepalive-data-in-the-example-below-is-omitted-for-clari"><strong>Get function of digital input/output (OCC)</strong></a></td><td>Server/ End device</td></tr><tr><td>64</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/automatic-changeover#this-command-is-used-to-set-the-threshold-changeover-temperatures-values."><strong>Set automatic changeover threshold temperature</strong></a></td><td>Server</td></tr><tr><td>65</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports/automatic-changeover#this-command-is-used-to-get-the-threshold-changeover-temperatures."><strong>Get automatic changeover threshold temperature</strong></a></td><td>Server/ End device</td></tr><tr><td>66</td><td>All</td><td><a href="../on-off-and-target-temperature#set-the-status-of-the-device."><strong>Set device status - on/off</strong></a></td><td>Server</td></tr><tr><td>67</td><td>All</td><td><a href="../on-off-and-target-temperature#get-the-status-of-the-device."><strong>Get device status - on/off</strong></a></td><td>Server/ End device</td></tr><tr><td>68</td><td>All</td><td><a href="../general-display-and-power-recovery#you-can-set-the-operation-after-return-of-power-supply-with-the-command"><strong>Set operation after return of power supply</strong></a></td><td>Server</td></tr><tr><td>69</td><td>All</td><td><a href="../general-display-and-power-recovery#get-the-operation-after-return-to-power-status."><strong>Get operation after return of power supply</strong></a></td><td>Server/ End device</td></tr><tr><td>6A</td><td>All</td><td><a href="../fan-settings/auto-fan-d-settings#you-can-set-the-delta-temperature-dt1-with-the-command"><strong>Set delta temperature 1 (ΔT1)</strong></a></td><td>Server</td></tr><tr><td>6B</td><td>All</td><td><a href="../fan-settings/auto-fan-d-settings#this-command-gets-the-target-temperature-step.-the-keepalive-data-in-the-example-below-is-omitted-fo"><strong>Get delta temperature 1 (ΔT1)</strong></a></td><td>Server/ End device</td></tr><tr><td>6C</td><td>All</td><td><a href="../fan-settings/auto-fan-d-settings#you-can-set-the-delta-temperatures-dt1-and-dt3-with-the-command"><strong>Set delta temperature 2 (ΔT2) and 3 (ΔT3)</strong></a></td><td>Server</td></tr><tr><td>6D</td><td>All</td><td><a href="../fan-settings/auto-fan-d-settings#this-command-gets-the-target-temperature-step.-the-keepalive-data-in-the-example-below-is-omitted-fo-1"><strong>Get delta temperature 2 (ΔT2) and 3 (ΔT3)</strong></a></td><td>Server/ End device</td></tr><tr><td>6E</td><td>All</td><td><a href="../general-display-and-power-recovery/frost-protection#you-can-read-the-frost-protection-status-with-the-command"><strong>Get frost protection status</strong></a></td><td>Server/ End device</td></tr><tr><td>70</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#you-can-read-the-occupancy-sensor-status-with-the-command"><strong>Get occupancy sensor status (set-point decrease)</strong></a></td><td>Server/ End device</td></tr><tr><td>71</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#you-can-read-the-occupancy-sensor-status-with-the-command-1"><strong>Get occupancy sensor status (fan off, valve closed)</strong></a></td><td>Server/ End device</td></tr><tr><td>72</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#you-can-read-the-dew-point-sensor-status-with-the-command"><strong>Get dew point sensor status</strong></a></td><td>Server/ End device</td></tr><tr><td>73</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#you-can-read-the-filter-alarm-status-with-the-command"><strong>Get filter alarm status</strong></a></td><td>Server/ End device</td></tr><tr><td>74</td><td>All</td><td><a href="../function-of-digital-input-output-io1-and-io2-ports#you-can-read-the-mode-changed-by-the-changeover-function-end-external-ntc-sensor-temperature-with-th"><strong>Get mode changed by the auto changeover function</strong></a></td><td>Server/ End device</td></tr><tr><td>75</td><td>All</td><td><a href="power-module-communication-status"><strong>Get power module communication status</strong></a></td><td>Server/ End device</td></tr><tr><td>76</td><td>≥ 1.6</td><td><a href="../on-off-and-target-temperature/target-temperature-ranges#set-2"><strong>Set heating and cooling target temp. ranges - unoccupied</strong></a></td><td>Server</td></tr><tr><td>77</td><td>≥ 1.6</td><td><a href="../on-off-and-target-temperature/target-temperature-ranges#get-2"><strong>Get heating and cooling target temp. ranges - unoccupied</strong></a></td><td>Server/ End device</td></tr><tr><td>78</td><td>≥ 1.6</td><td><a href="../fan-settings#set-7"><strong>Set fan off delay time</strong></a></td><td>Server</td></tr><tr><td>79</td><td>≥ 1.6</td><td><a href="../fan-settings#get-7"><strong>Get fan off delay time</strong></a></td><td>Server/ End device</td></tr><tr><td>7A</td><td>≥ 1.6</td><td><a href="../fan-settings#set-6"><strong>Set additional fan modes</strong></a></td><td>Server</td></tr><tr><td>7B</td><td>≥ 1.6</td><td><a href="../fan-settings#get-6"><strong>Get additional fan modes</strong></a></td><td>Server/ End device</td></tr><tr><td>7C</td><td>≥ 1.9</td><td><a href="../general-display-and-power-recovery/temperature-sensor-errors#get-internal-temperature-sensor-error"><strong>Get internal temperature sensor error</strong></a></td><td>Server/ End device</td></tr><tr><td>7D</td><td>≥ 1.9</td><td><a href="../general-display-and-power-recovery/temperature-sensor-errors#get-external-temperature-sensor-error"><strong>Get external temperature sensor error</strong></a></td><td>Server/ End device</td></tr><tr><td>9A</td><td>≥ 1.8</td><td><a href="../general-display-and-power-recovery/user-interface-language#set"><strong>Set user interface language</strong></a></td><td>Server</td></tr><tr><td>9B</td><td>≥ 1.8</td><td><a href="../general-display-and-power-recovery/user-interface-language#get"><strong>Get user interface language</strong></a></td><td>Server/ End device</td></tr><tr><td>A4</td><td>≥ 1.4</td><td><a href="../general-display-and-power-recovery/network-related-settings#get-lorawan-region"><strong>Get</strong> <strong>LoRaWAN Region</strong></a></td><td>Server/ End device</td></tr><tr><td>A5</td><td>≥ 1.8</td><td><a href="restart-device"><strong>Restart device</strong></a></td><td>Server</td></tr></tbody></table>