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Interface mode examples sw1 – sw4 (continued), Address and irq selection – Impulse 7404 User Manual

Page 7

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Card

Setup

Sealevel Systems COMM+4.PCI Page

4

Interface Mode Examples SW1 – SW4 (continued)

Figure 4 - Switches SW1- SW4, RS-485 ‘RTS’ Enabled, with ‘No Echo’ and no

termination resistor in circuit.

Figure 5 - Switches SW1- SW4, RS-485 ‘RTS’ Enabled, with ‘Echo’ and no

termination resistor in circuit.

Address and IRQ selection

The COMM+4.PCI is automatically assigned resources by your motherboard
BIOS. Only the I/O addresses may be modified by the user. Adding or removing
other hardware may change the assignment of I/O addresses and IRQs.

1 2 3 4

ON

OFF

AT RT NE T

1 2 3 4

ON

OFF

AT RT NE T