Block Diagram

TDS_OB2
TDS_OB3
TDS_OB1
TDS_OT3
TDS_OT2
MCU
(A33G527VLN)
C
O
N
12V
24V
PWR485_B
From PWR B/D
PWR485_A
BUZZER
Circuit
BUZ_PWR
BUZ_ON
24V
12V
24V
C
O
N
12V
RS485_B
To NAVILINK
RS485_A
C
O
N
5V
PC_RX
To PC
PC_TX
C
O
N
12V
WH485_A
WH485_B
To Water Heater
C
O
N
WH_CHK_12V
WH_CHK_F
To WH CHK
UART
(ZT485)
RS485_A
VCC_5V
RS485_B
485_EN 485_TX 485_RX
EEPROM
(24LC256)
SCL0
SDA0
CRYSTAL
(8MHz)
XTALO
XTALI
FILTER
UART
(ZT485)
PWR485_A
VCC_5V
PWR485_B
485_EN
485_TX
485_RX
UART
(ZT485)
WH485_A
VCC_5V
WH485_B
485_EN
485_TX
485_RX
CRYSTAL
(32.768KHz)
CLOCK
KEEPER
(DS1302Z)
XO
XI
VCC 5V
VCC 5V
RT_EN
RTIO
RTCLK
OP AMP
(TL074IDR)
TDS_OT2
TDS_OB2
TDS_IN2
TDS_OT3
TDS_OB3
TDS_IN3
TDS_OT1
TDS_OB1
TDS_IN1
TDS_OT2
TDS_OB2
TDS_IN2
TDS_OT3
TDS_OB3
TDS_IN3
P5V
N5V
BUZ_PWR
BUZ_ON
TDS_OT1
C
O
N
WH_ERR_VCC
WH_ERR_SIG
DEEP
SWITCH
DIP3
DIP4
DIP1
DIP2
COM
LDO1
(LD1117)
12V VCC_5V
LDO2
(LM2776)
VCC_5V
P5V
N5V
VCC_5V
Touch IC
(ANMG08)
Touch_1
Touch_2
Touch_3
Touch_4
VCC_5V
T_RST
T_SCL
T_SDA
COM1
COM4
SEG27
SEG1
VCC_5V
VCC_5V
BLU_A1
BLU_A2
LCD Controller
(HT1621B)
VCC_5V
LCD_CS
LCD_WR
LCD_RD
LCD_DA
LCD_CS
LCD_WR
LCD_RD
LCD_DA
PUMP_O
TEMP_SEN
TEMP_SEN
PUMP
Circuit
PUMP_O
PUMP_IN
PUMP_FB
Water ERR
Circuit
WH_ERR
WHERR_VCC
WH_ERR_SIG
PUMP
Circuit
WH_CHK_S
WH_CHK_S
WPS
WPS
FLOW
Circuit
FLOW_FB1
FLOW_EN1
FLOW_FB2
FLOW_EN2
T_SCL
T_SDA
T_RST
VALVE
Circuit
MAIN_VV
MAIN_VV_FB
VALVE
Circuit
BYP_VV
BYP_VV_FB
MAIN
BYPASS
VALVE
Circuit
SFW1_VV
SFW1_VV_FB
VALVE
Circuit
SFW2_VV
SFW2_VV_FB
SFW1
SFW2
VALVE
Circuit
DRN1_VV
DRN1_VV_FB
VALVE
Circuit
DRN2_VV
DRN2_VV_FB
DRAIN1
DRAIN2
VALVE
Circuit
REC1_VV
REC1_VV_FB
VALVE
Circuit
REC2_VV
REC2_VV_FB
RECICR1
RECICR2
FLOW_EN1
FLOW_EN2
FLOW_FB1
FLOW_FB2
MAIN_VV_FB
MAIN_VV
BYP_VV_FB
BYP_VV
SFW1_VV_FB
SFW1_VV
SFW2_VV_FB
SFW2_VV
DRN1_VV
DRN2_VV_FB
DRN2_VV
REC1_VV_FB
REC1_VV
REC2_VV_FB
REC2_VV
DRN1_VV_FB
TDS_OT1
TDS_OB1
TDS_IN1
Contents
Voltage Line
Control Line
Feedback Line
Communication Line
(UA1)
(XA1)
(UB1)
(CB3)
(UA2)
(SWD1)
(UK1)
(LCDK1)
(UH1)
(UE1)
(BUZ1)
(UC1)
(UF1)
(UP1)
(UL1)
(UL2)
(CON1)
(CON3)
(CON4)
(CON6)
(CON7)
(CON2)
I/O Connector
Power / MCU
LCD / BLU
Touch
TDS
Buzzer