B&R Industries Automation PC 620, User Manual

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Technical data • Individual components
Automation PC 620 User's Manual V 1.90
Pin assignments
I/O address and IRQ
The setting for the I/O address and the IRQ can be changed in the BIOS setup (under
"Advanced" - submenu "Baseboard/Panel Features" - submenu "Legacy Devices", setting "COM
E"). Please note any potential conflicts with other resources when changing this setting.
Bus length and cable type RS232
The maximum transfer rate of 115 kBit/s depends on the cable type being used.
Add-on RS232/422/485
RS232 RS422/485
9-pin DSUB plug
Type RS232; not modem capable;
electrically isolated
UART 16550 compatible, 16 byte FIFO
Transfer rate Max. 115 kBit/s
Bus length Max. 15 meters Max. 1200 meters
Pin Assignment
RS232
Pin assignments -
RS422
1 n.c. TXD
2 RXD n.c.
3 TXD n.c.
4 n.c. TXD
5 GND GND
6 n.c. RXD
7 RTS n.c.
8 CTS n.c.
9 n.c. RXD
Table 77: Pin assignments - RS232/RS422
Resource Default setting Additional setting options
I/O address 2E8 238, 2F8, 338, 3E8, 3F8
IRQ IRQ10 IRQ 3, 4, 5, 7, 11, 12
Table 78: Add-on RS232/422/485 - I/O address and IRQ
Distance [m] Transfer rate [kBit/s]
≤
15 Type 64
≤
10 Type 115
≤
5 Type 115
Table 79: RS232 bus length and transfer rate