SDS20 is a thermo-hygrostat controller of Seung IlL Electronic.
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| <Figure 1> Read setting example of SEUNG IL Temp communication driver |
Device part of <Figure 1> input Com Port(COM1), Baud Rate(4800), Parity Bit(0), Data Bit(8), Stop Bit(1) respectively, according to controller.
In case of RS 485 communication, set the Device part as connected communication port, Com Baud(4800), Parity Bit(0), Data Bit(8), Stop Bit(1), TxDTR, RxON, 100(Delay time after DTR OFF, when READ), 300(Delay time after DTR OFF, when WRITE).
Set READ/WRITE delay time as suitable(100, 300) value according to system status, here.
SDS20 driver's READ schedule
Read schedule setting parameters are as follows :
1) STATION - STATION number of SDS20 controller.
2) FUNCTION - Don't care.
3) Read Start Address - Don't care.
4) Save Start Address for Communication Server - ScanBuf position to save the read value.
5) Read Size - Fixed to 37
READ schedule example)
READ, 1, 0, 0, 0, 37,
The following is memory save address of data read and contents.
| Order | Contents | Remarks |
| 1 ~ 16 | Bit Data Area | Refer to manual |
| 17 | Temp Data | Unit : 0.1กษ |
| 18 | Humidity Data | Unit : 1% |
| 19 | Setting Temp Data | Unit : 0.1กษ |
| 20 | Setting Humidity Data | Unit : 1% |
| 21 | Delay Time for operating Compressor #1 | Unit : Sec |
| 22 | Delay Time for operating Compressor #2 | Unit : Sec |
| 23 | Delay time for stopping indoor unit fan | Unit : Sec |
| 24 | Deviation value(Induction Temp) of Air-Conditioning Operation |
Unit : 0.01กษ |
| 25 | Deviation value(Induction Temp) of Heating Operation | Unit : 0.01กษ |
| 26 | Deviation value of Humidification Operation | Unit : 1% |
| 27 | Deviation value of Dehumidification Operation | Unit : 1% |
| 28~30 | System Operation Time(Low, Mid, Hi) | |
| 31~37 | Etc |
Digital Write
Digital write setting parameters are as follows :
1) PORT : PORT number.
2) STATION : STATION number. (No.1 at above example)
Write example)
PORT : 0 STATION:1
If you set as above, you can control Operation/Stop of no.1 station of thermo-hygrostat controller.
Analog Write
Analog write setting parameters are as follows:
1) PORT : PORT number.
2) STATION : STATION number. (No.1 at above example)
3) ADDRESS : Output address.
Type of setting value according to output address is as follows.
0 : Set temp
1 : Set humidity
2 : Delay time for Cooler #1 operation
3 : Delay time for Cooler #2 operation
4 : Delay time for BLOWER stop
5 : Deviation of air-conditioning operation
6 : Deviation of heating operation
7 : Deviation of humidification operation
8 : Deviation of dehumidification operation
Write example)
PORT : 0 STATION:1 ADDRESS:0000
If you set as above, you can designate setting temperature of no.1 station of thermo-hygrostat controller.