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19 19  |Mounting holes|(% style="width:160px" %)M4
20 20  |Headers X1-X4 type|(% style="width:160px" %)Molex series Micro-Fit
21 21  
22 +
22 22  == 2.2 Headers description ==
23 23  
24 -The BMS Logic 12 is designed to measure temperature and voltage of 12 battery cells.
25 -
26 26  [[image:1733143089674-767.png||data-xwiki-image-style-alignment="center" height="356" width="531"]]
27 27  
28 -=== 2.2.1 X1 – header for cells ===
29 -
30 -[[image:1733143152741-474.jpeg||data-xwiki-image-style-alignment="center" height="93" width="241"]]
31 -
32 -|**Pin**|**Name**|**Description**
33 -|**1**|**V-**|Minus of the cell stack
34 -|**2**|**C2**|Cell #2
35 -|**3**|**C4**|Cell #4
36 -|**4**|**C6**|Cell #6
37 -|**5**|**C8**|Cell #8
38 -|**6**|**C10**|Cell #10
39 -|**7**|**C12**|Cell #12 (maximum potential of the cell stack)
40 -|**8**|-|-
41 -|**9**|**C1**|Cell #1 (minimum potential with respect to V-)
42 -|**10**|**C3**|Cell #3
43 -|**11**|**C5**|Cell #5
44 -|**12**|**C7**|Cell #7
45 -|**13**|**C9**|Cell #9
46 -|**14**|**C11**|Cell #11
47 -
48 -=== 2.2.2 X2 – header for temperature sensors ===
49 -
50 -[[image:1733143152745-708.jpeg||data-xwiki-image-style-alignment="center" height="92" width="368"]]
51 -
52 -|**Pin**|**Name**|**Description**
53 -|**1**|**TEMPG12**|Ground of the thermistor #12
54 -|**2**|**TEMPG11**|Ground of the thermistor #11
55 -|**3**|**TEMPG10**|Ground of the thermistor #10
56 -|**4**|**TEMPG9**|Ground of the thermistor #9
57 -|**5**|**TEMPG8**|Ground of the thermistor #8
58 -|**6**|**TEMPG7**|Ground of the thermistor #7
59 -|**7**|**TEMPG6**|Ground of the thermistor #6
60 -|**8**|**TEMPG5**|Ground of the thermistor #5
61 -|**9**|**TEMPG4**|Ground of the thermistor #4
62 -|**10**|**TEMPG3**|Ground of the thermistor #3
63 -|**11**|**TEMPG2**|Ground of the thermistor #2
64 -|**12**|**TEMPG1**|Ground of the thermistor #1
65 -|**13**|**TEMP12**|Signal from the thermistor #12
66 -|**14**|**TEMP11**|Signal from the thermistor #11
67 -|**15**|**TEMP10**|Signal from the thermistor #10
68 -|**16**|**TEMP9**|Signal from the thermistor #9
69 -|**17**|**TEMP8**|Signal from the thermistor #8
70 -|**18**|**TEMP7**|Signal from the thermistor #7
71 -|**19**|**TEMP6**|Signal from the thermistor #6
72 -|**20**|**TEMP5**|Signal from the thermistor #5
73 -|**21**|**TEMP4**|Signal from the thermistor #4
74 -|**22**|**TEMP3**|Signal from the thermistor #3
75 -|**23**|**TEMP2**|Signal from the thermistor #2
76 -|**24**|**TEMP1**|Signal from the thermistor #1
77 -
78 -=== 2.2.3 X3, X4 – headers for communication with BMS Main ===
79 -
80 -|**Pin**|**Name**|**Description**
81 -|**1**|**RS485_A**|RS-485 line A for communication with the BMS Main
82 -|**2**|**RS485_B**|RS-485 line B for communication with the BMS Main
83 -|**3**|**+5V**|Supply voltage 5V
84 -|**4**|**GND**|Ground
85 -
86 -== 2.3 Switches and indicators ==
87 -
88 -=== 2.3.1 SWD1 – address switch ===
89 -
90 -|**Switch number**|**Description**
91 -|**1**|The first (the lowest) bit of the address. Position ON - bit is 1
92 -|**2**|The second bit is the address. Position ON - bit is 1
93 -|**3**|The third bit of the address. Position ON - bit is 1
94 -|**4**|The fourth bit of the address. Position ON - bit is 1
95 -|**5**|The fifth (the highest) bit of the address. Position ON - bit is 1
96 -
97 -(% class="box infomessage" %)
98 -(((
99 -**Note: **There is no SWD1 switch in the recent revisions of the BMS Logic 12. The device address must be configured in the settings (see the section 3.2** **Configuration procedure).
100 -)))
101 -
102 -=== 2.3.2 SWD2 – RS-485 termination resistor switch ===
103 -
104 -To connect the termination resistor between the **RS485_A** and **RS485_B** lines, switch the SWD2 to the ON position.
105 -
106 -(% class="box infomessage" %)
107 -(((
108 -**Note: **There is no SWD2 switch in the recent revisions of the BMS Logic 12. Connect a 120 Ohm termination resistor directly to the X4 connector between the lines RS485_A and RS485_B.
109 -)))
110 -
111 -=== 2.3.3 DS1 – mode indicator ===
112 -
113 -|**State**|**Description**
114 -|Blinking|Connection between the BMS Main and the device is established
115 -|Short flashing (~~50 milliseconds in a second)|The device is measuring voltage and temperature. No communication between the BMS Main and the device
116 -|Long flashing (1 second in a 2 second period)|The device is in the bootloader mode
117 -
118 118  
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