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Communication Ports
Figure 2-4 RS232 port pins
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Table 2-3 RS232 port pin definitions
Pin |
Meaning |
|---|---|
1 |
Reserved pin |
2 |
UPS transmit terminal for RS232 data communication |
3 |
UPS receive terminal for RS232 data communication |
4 |
Reserved pin |
5 |
Common terminal for RS232 data communication |
6–9 |
Reserved pin |
Figure 2-5 RS485/BMS port pins
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Table 2-4 Pin definitions for the RS485 port
Pin |
Signal |
Meaning |
Description |
|---|---|---|---|
1–3 |
NC |
Reserved pin |
Northbound port, two-wire RS485 communication Supports the baud rate of 9600 bit/s. |
4 |
A |
Data+ |
|
5 |
B |
Data– |
|
6 |
NC |
Reserved pin |
|
7 |
NC |
Reserved pin |
|
8 |
GND |
Signal ground |
Table 2-5 Pin definitions for the BMS port
Pin |
Signal |
Meaning |
Description |
|---|---|---|---|
1 |
A |
Data+ |
Pins 1 and 4 are short-circuited; pins 2 and 5 are short-circuited; communicating with the lithium battery Supports the baud rate of 9600 bit/s. |
2 |
B |
Data– |
|
3 |
NC |
Reserved pin |
|
4 |
A |
Data+ |
|
5 |
B |
Data– |
|
6 |
NC |
Reserved pin |
|
7 |
NC |
Reserved pin |
|
8 |
GND |
Signal ground |