PCI/ PCI Express-Communication User Manual 62
5.1.8 PCI-1622A/B/C
The following table and figure show the pin assignments of 1 female DB78 connector
on the bracket to DB9/DB25 for the PCI-1622A/B/C cards in RS-422 and RS-485
modes.
Table 5.14: PCI-1620A/B/C, PCIe-1620A/B, and PCIe-1622A/B Male DB9
on cable
Pin RS-232
1 DCD
2RxD
3TxD
4DTR
5GND
6DSR
7RTS
8CTS
Table 5.15: PCI-1620A/B/C, PCIe-1620A/B, and PCIe-1622A/B Male
DB25 on cable
Pin RS-232
1DCD
2RxD
3TxD
4DTR
5GND
6DSR
7RTS
8CTS
20 DTR
Table 5.16: PCI-1622A/B/C Male DB9 on cable
Pin RS-422 RS-485
1TxD- Data-
2TxD+ Data+
3RxD+ -
4RxD- -
5GND GND
6RTS- -
7RTS+ -
8CTS+ -
9CTS- -
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