B&B Electronics 3PXCC4A Standard Port Addresses, Base Hex Address, Binary Equivalent, 7654321

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When setting the address (via the dipswitch) use the silkscreen on the printed circuit board. This silkscreen shows a “1” and a “0” to refer 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.

Switch Position

Bus Connection

Decimal Weight

Hex Weight

Table 1. Address Switches

 

 

 

 

 

 

 

 

 

7

6

5

4

3

2

1

SA9

SA8

SA7

SA6

SA5

SA4

SA3

512

256

128

64

32

16

8

200

100

80

40

20

10

8

To install the 3PXCC4A 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

COM1

COM2

COM3

COM4

Base Hex

Address

3F8

2F8

3E8

2E8

Binary

Equivalent

1111111000

1011111000

1111101000

1011101000

Switch Settings

MSB LSB

7654321

1111111

1011111

1111101

1011101

Manual Document# 3PXCC4A3001

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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

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Contents Model 3PXCC4A Table of Contents Introduction and General Information FeaturesSpecifications Use ESD precautions for safe handling Quick Installation GuideManual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Adding Serial Ports in Windows 95/98 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Changing COM Port Resources in Windows 95/98 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Adding Serial Ports in Windows NT Checking Windows 2000 for Available Address/IRQ’s Click on Hardware Click on Device Manager Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Adding Serial Ports in Windows Click Next Click on Add/Troubleshoot a device Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Manual Document# 3PXCC4A3001 Address and IRQ Setting Address Switch Setup Silk Screen Plot of 3PXCC4A PCB Binary Equivalent Switch SettingsStandard Port Addresses Base Hex AddressSpace Description Interrupt Jumper SetupStandard IRQ Settings Shared IRQ Mode RS-422 Mode Communication Jumper SettingsRS-232 Mode RS-485 Operation RS-485 ModeRS-422 and RS-485 Termination High Speed ModePinouts Physical Hook-up and TroubleshootingRS-422 Pinouts RJ45 Pin RS-422 SignalCommunication Cable Data RS-422/RS-485 Four Wire Pinout DescriptionEuropean Office TroubleshootingInternational/USA Office Appendix a Hardware I/O Map 3BC-3BE Declaration of Conformity Appendix B Declaration of Conformity Statement