Optional PORT 2 (DB-25)
GND | 1 |
RS232 TXD | 14 | |
2 | ||
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RS232 RXD | 15 | |
3 | ||
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RS232 RTS | 16 | |
4 | ||
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RS232 CTS | 17 | |
5 | ||
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RS232 DSR | 18 | |
6 | ||
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RTN | 19 | |
7 | ||
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+12V | 20 | |
8 | ||
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NOT USED | 21 | |
9 | ||
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NOT USED | 22 | |
10 | ||
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NOT USED | 23 | |
11 | ||
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NOT USED | 24 | |
12 | ||
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NOT USED | 25 | |
13 | ||
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NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
RS232 DTR
NOT USED
NOT USED
NOT USED
NOT USED
Figure 42. Port 2 Pin Assignments
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| Table 3. Pin Assignments for Port 2 |
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| Pin # | Symbol | Description | Comments |
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| 1 | GND | Chassis Ground |
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| 2 | TXD | Transmit Data | Input to UPS |
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| 3 | RXD | Receive Data | Output from UPS |
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| 4 | RTS | Request to Send | Input to UPS |
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| 5 | CTS | Clear to Send | Output from UPS |
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| 6 | DSR | Data Set Ready | Output from UPS |
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| 7 | RTN | Return |
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| 8 | +12V | +12 volts | Output from UPS |
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| 20 | DTR | Data Terminal Ready | Input to UPS |
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| 22 | Output from UPS |
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| NOTE: Pins 5 and 6 are tied together internally. |
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88 |
| Powerware BPIII Harsh Environment UPS | |||
