Advantech PCL-740 User Manual Page 28

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PCL-COMMUNICATION User Manual 18
2.3.3 Default Setting
The board is shipped with default settings. If you need to change these
settings, however, see the following sections. Otherwise, you can simply
install the card. Note that you will need to disable your CPU card's on-
board COM ports, if any, or set them to alternate addresses / IRQ.
2.3.4 Mode Selection
PCL-740 and PCL-741
First, you have to decide which mode each port will operate in. There is
RS-232, RS-422, RS-485 or current-loop driver mode for PCL-740, and
RS-232 or current-loop for PCL-741.
Figure 2.10: Mode Selections for PCL-740
Table 2.1: Default setting of ISA Comm. Cards
Card PCL-
740
PCL-
741
PCL-
743B/S,
PCL-
745B/S
PCL-
746+
PCL-846 PCL-849A/B/
+/L
PCL-858
Mode
Selection
RS-
232
RS-
232
RS-422 RS-232 RS-422 RS-232
Base
Address
3F8 3F8 &
2F8
3F8 &
2F8
Address
300H
Address
300H
Address
300H
Vector
Address
- - - Interrupt
280H
Interrupt
280H
Interrupt
280H
IRQ
Mode
- - - Share Share Share
IRQ 4 4 & 3 4 & 3 12 12 12
Speed
Mode
- - 1x 1X 1X 1X
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