LG PI-485 protocol
Supported device types and versions
Communication line configuration
Communication station configuration
I/O tag configuration
Literature
Document revisions
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Possible I/O tag types: Ai, Ao, Ci, Co, Di, Dout, Qi
The address of the I/O tag is textual. The following table shows a list of existing addresses:
Address | I/O tag type | Description |
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LOCK_REMOTE |
Dout | Set the remote controller functionality: Lock (1) / Unlock (0). | |
LOCK_REMOTE_RD | Di | Get |
the remote controller functionality: Lock (1) / Unlock (0). |
OPERATE_OUTPUT |
Dout | Set the device functionality: the device is stopped (0) / working (1). | |
OPERATE_OUTPUT_RD | Di | Get |
the device functionality: the device is stopped (0) / working (1). | ||
OPERATE_DHW | Dout | Set the domestic hot water heating in the built-in boiler: disabled (0) / enabled (1). |
OPERATE_DHW_RD | Di |
Get |
the domestic hot water heating in the built-in boiler: disabled (0) / enabled (1). | ||
OPERATE_MODE | Ao | Set the mode of operation: 0=cooling, 1=dehumidification, 2=ventilation, 3=auto, 4=heating. |
OPERATE_MODE_RD | Ai |
Get |
the mode of operation: 0=cooling, 1=dehumidification, 2=ventilation, 3=auto, 4=heating. | ||
TEMP_OUTPUT_SP | Ao | Set the desired outlet water temperature. |
TEMP_OUTPUT_RD | Ai |
Get |
the desired outlet water temperature. | ||
TEMP_DHW_SP | Ao | Set the desired temperature of the domestic water in the built-in boiler. |
TEMP_DHW_RD | Ai |
Get |
the desired temperature of the domestic water in the built-in boiler. | ||
TEMP_WATER_IN | Ai | Current inlet water temperature. |
TEMP_WATER_OUT | Ai | Current outlet water temperature. |
TEMP_ROOM | Ai | Current room temperature (external sensor connectable to the indoor heat pump unit). |
TEMP_TANK | Ai |
The current temperature of the domestic water in the built-in boiler. | |
TEMP_SOLAR | Ai |
The current temperature of an optional external solar system (if connected). | ||
CONNECTED_IDU | Di | The indoor unit is connected (1) or disconnected (0). |
TGT_TEMP_SEL | Di |
The current setpoint is the temperature of air TEMP_ROOM (0) or water TEMP_OUTPUT_SP (1). |
Note: Temperatures are integer numbers (°C).
Note: it takes longer to set the values (approx. 12 seconds).
Example: TEMP_OUTPUT_SP has a value of 40 °C. After writing a value of 42, a reading follows which changes the value back to 40. Only only after approx. 12 seconds does the value of the I/O tag TEMP_OUTPUT_RD change to 42.
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