2-10 
Pin No.  Signal Name  Discription 
8)   GND  Ground 
9)   
VBB_AutoFlowmeter 
_CPU 
12V power supply for main and auxiliary CPU of EFCS 
flowmeter 
10)   GND  Ground 
11)   GND  Ground 
12)    TXD_FLOW  Sent signal of series port 
13)    RXD_FLOW  Received signal of series port 
14)   ACGO_State2_CN  No connection 
15)   GND  Ground 
16)   ACGO_State1_CN  No connection 
17)   GND  Ground 
18)   ACGO+  No connection 
19)   ACGO-  No connection 
20)   
12VB_AutoFlowmeter 
_Pro_valves 
Power supply for the propotional valve of EFCS 
flowmeter 
21)   GND  Ground 
22)    VBB  Electromagnet power supply 
23)    VBB  Electromagnet power supply 
24)   GND  Ground 
25)   GND  Ground 
26)   GND  Ground 
Definition of mother board J5 (calibration port) 
Pin No.  Signal Name  Discription 
1)    NC  No connection inside 
2)    NC  No connection inside 
3)    NC  No connection inside 
4)    NC  No connection inside 
5)   GND  Ground 
6)    12VA  12V power supply output 
7)    RXD_VCM2  Received signal of alibration series port 
8)    TXD_VCM2  Sent signal of calibration series port 
9)   GND  Ground 
Definition of mother board J6 (top light board port) 
Pin No.  Signal Name  Discription 
1)    12VA  12V power supply signal 
2)   GND  Ground 
3)    Lighting  Brightness level control signal 
4)    Speaker+  Anode of speaker 
5)   Speaker-  Cathode of speaker 
Definition of mother board J7 (fan port of hardware box) 
Pin No.  Signal Name  Discription 
1)   12VA  Power supply 
2)    Fan_PWM1  Fan PWM control signal 
3)   Fan_STATE1  Status signal 
4)   GND  Ground 
Definition of mother board J8 (VGA port) 
PinNo. SignalName Discription
1)   VGA_RED  RED signal 
2)   VGA_GREEN  GREEN signal 
3)   VGA_BLUE  BLUE signal