Installation and Configuration
Communications
Table 2.6 Jumper/Pin Settings for DTR/DSR Flow Control (Default)
| Jumper Connections | RS-232 Connector Pin |
DTR (Input to RS-232) | J17 to 2-4 and 1-3 | 4 |
| | |
DSR (Output to RS-232) | J16 to 3-5 and 4-6 | 6 |
| | |
Connections Use a 9-pin (DB9) to 9-pin parallel cable to connect the interface card to the serial port on the host computer. If you need to use a 25-pin connector (DB25) on the host interface, ensure the correct connections are made by referring Table 2.7. If the proper cables are not available and you need to change the transmit/receive pin configuration, see “Transmit / Receive Pin Selection”.
Table 2.7 Transmit/Receive Pin Connections
Power Supply (DCE) | | Host Computer (DTE) |
| | 9-pin connector |
| | |
Pin 2 | transmits to | Pin 2 (Receive) |
| | |
Pin 3 | receives from | Pin 3 (Transmit) |
| | | |
Pin 5 (Ground) | connects to | Pin 5 | (Ground) |
| | |
| | 25-pin connector |
| | | |
Pin 2 | transmits to | Pin 3 | (Receive) |
| | | |
Pin 3 | receives from | Pin 2 | (Transmit) |
| | | |
Pin 5 (Ground) | connects to | Pin 7 | (Ground) |
| | | |
Transmit / The RS-232 interface can use either pin 2 or pin 3 of the RS-232 connector to Receive Pin transmit or receive data. You can set the pin orientation you want by changing Selection the position of the J10 jumper on the interface PCB. Table 2.8, “Jumper Settings for Transmit/Receive Pin Selection” shows the transmit/receive pin selection on
the RS-232 connector in relation to the settings of the J10 jumper. See Figure 2.3, “RS-232 Interface PCB” on page 18 to locate jumper J10.
Table 2.8 Jumper Settings for Transmit/Receive Pin Selection
| Jumper J10 Connections | RS-232 Connector Pin |
Transmit (TXD) | 4-6 (default) | 3 |
| 4-2 | 2 |
Receive (RXD) | 3-1 (default) | 2 |
| 3-5 | 3 |
22 | Operating Manual for RS-232 for XPD Series Power Supply |