B&B Electronics 232CC1A, 232CC1B, 232CC2B, 232CC2A manual Address Switches

Models: 232CC2A 232CC1B 232CC2B 232CC1A

1 42
Download 42 pages 11.49 Kb
Page 35
Image 35
Table 1. Address Switches

When setting the address (via the dipswitch) use the silkscreen on the printed circuit board. This silkscreen shows a “1” and a “0” -- referring to the “on and “off” states that each switch is set to. Switch S1 configures port one (labeled J1) and, on two port cards, switch S2 configures port two (labeled J2). Least significant bit (LSB) and most significant bit (MSB) are labeled on the card. Table 1 shows the numerical weight and electrical connection of each switch position. Refer to Table 2 for COM Port addresses. Table 3 shows frequently unused port addresses for applications when COM Port addresses 1-4 are already used.

Table 1. Address Switches

Switch Position

7

6

5

4

3

2

1

Bus Connection

SA9

SA8

SA7

SA6

SA5

SA4

SA3

Decimal Weight

512

256

128

64

32

16

8

Hex Weight

200

100

80

40

20

10

8

To install the 232CC card as COM1, 2, 3, or 4, follow the switch settings shown in Table 2. To install at another address, follow the switch settings shown in Table 3.

Table 2. Standard Port Addresses

 

Base Hex

Binary

Switch Settings

 

Address

Equivalent

MSB LSB

 

 

 

7654321

COM1

3F8

1111111000

1111111

COM2

2F8

1011111000

1011111

COM3

3E8

1111101000

1111101

COM4

2E8

1011101000

1011101

 

 

 

 

Documentation Number 232CCxx4502

33

B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445

Page 35
Image 35
B&B Electronics 232CC1A, 232CC1B, 232CC2B, 232CC2A manual Address Switches