Gigabyte MBBZ1AI Manual - Page 22
/22/23 JRS4/JRS5/JRS3/JRS2 RS232/RS422/RS485 Mode Select Jumper
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Page 22 highlights
18/19) JCOMC3/JCOMC4 (Serial Port #3/#4 5V/12V/RI Select Headers) JCOMC3 JCOMC4 21 1-2 Close: 5V (Power COM) 65 21 3-4 Close: RI (STAND COM) 65 21 5-6 Close: 12V (Power COM) 65 20/21/22/23) JRS4/JRS5/JRS3/JRS2 (RS232/RS422/RS485 Mode Select Jumper) JRS4 JRS3 JRS2 JRS5 JRS2 Pin No. 1 2 3 Definition RS485_B -DCD IN RS232 -RXD OUT 1 JRS3 Pin No. Definition 1 RS485_A 2 -RXD IN 3 RS232 -RXD OUT JRS4 Pin No. 1 2 3 Definition RS422_A -TXD IN RS232 -DTR OUT JRS5 Pin No. 1 2 3 Definition RS422_B -DTR IN RS232 -DTR OUT - 22 - Hardware Installation
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- 22 -
Hardware Installation
18/19) JCOMC3/JCOMC4 (Serial Port #3/#4 5V/12V/RI Select Headers)
JCOMC3
JCOMC4
JRS2
JRS3
JRS5
1
1
1
5
5
5
6
6
6
2
2
2
1-2 Close: 5V (Power COM)
3-4 Close: RI (STAND COM)
5-6 Close: 12V (Power COM)
20/21/22/23) JRS4/JRS5/JRS3/JRS2 (RS232/RS422/RS485 Mode Select Jumper)
1
Pin No.
Definition
1
RS485_B
2
-DCD IN
3
RS232 -RXD OUT
Pin No.
Definition
1
RS485_A
2
-RXD IN
3
RS232 -RXD OUT
Pin No.
Definition
1
RS422_A
2
-TXD IN
3
RS232 -DTR OUT
Pin No.
Definition
1
RS422_B
2
-DTR IN
3
RS232 -DTR OUT
JRS2
JRS3
JRS4
JRS5
JRS4