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©Vecow EAC-2000 User Manual
GETTING TO KNOW YOUR EAC-2000/2100
2.5.4 JP9, JP10 : COM1, COM2 RS485 Mode Terminal resistance ON/OFF
1
2
4
1
4
1
1
5
1
5
3
1
L1
3
2
1
5
4
6
L2
1
10
1
10
1
10
1
10
1
3
1
3
1
3
1
3
3
3
2
1
74
58
M
75
67
57
9
10
18
1
4
13
14
5
9
10
18
1
4
13
14
5
6
5
4
3
2
1
9
1
3
Y
R9
R10
R8
O
G
R12
R1
R
11
Y
R9
R10
R8
O
G
R12
R1 R
11
Y
R9
R10
R8
O
G
R12
R1
R
11
Y
R9
R10
R8
O
G
R12
R1
R
11
19
1
50
49
2
1
JP10
JP9
There are two Pin Header JP9 and JP10 to set terminal resistor (120Ω) ON/OFF
of COM RS485 mode function.
Jumper
Setting
Function
JP9
(COM1)
1-2
RS485 Mode Terminal resistance OFF (Default)
2-3
RS485 Mode Terminal resistance ON
JP10
(COM1)
1-2
RS485 Mode Terminal resistance OFF (Default)
2-3
RS485 Mode Terminal resistance ON