B & B ELECTRONICS 3PXSD4A, 3PXSD4B Card Type Serial Chipset 16550A (3PXSD4A) 16750 (3PXSD4B) I/O Options Serial ports (4) Data Bus 8/16 bit ISA [Image] CONNECTIONS Function Label Function Label RS-232, RS-422, or P1 RS-232, RS-422, or P3 RS-485 serial port 1 RS-485 serial port 3 RS-232, RS-422, or P2 RS-232, RS-422, or P4 RS-485 serial port 2 RS-485 serial port 4 USER CONFIGURABLE SETTINGS Setting Label Position » RS-485 receiver disabled when JP3/B Pins 1 & 2 transmitting on port 1 closed RS-485 receiver always enabled on JP3/B Pins 2 & 3 port 1 closed RS-485 transmitter for port 1 enabled JP3/D Pins 2 & 3 on high RTS only closed RS-485 transmitter for port 1 enabled JP3/D Pins 1 & 2 whenever transmission is attempted closed RS-422/485 termination enabled on JP3/E Pins 1 & 2 port 1 closed RS-422/485 termination disabled on JP3/E Pins 2 & 3 port 1 closed » RS-485 receiver disabled when JP4/B Pins 1 & 2 transmitting on port 2 closed RS-485 receiver always enabled on JP4/B Pins 2 & 3 port 2 closed RS-485 transmitter for port 2 enabled JP4/D Pins 2 & 3 on high RTS only closed RS-485 transmitter for port 2 enabled JP4/D Pins 1 & 2 whenever transmission is attempted closed RS-422/485 termination enabled on JP4/E Pins 1 & 2 port 2 closed RS-422/485 termination disabled on JP4/E Pins 2 & 3 port 2 closed » Serial port clock speed normal JP5 Pins 1 & 2 closed Serial port clock speed multiplied by JP5 Pins 2 & 3 4 closed Status register enabled JP6 Pins 1 & 2 closed Status register disabled JP6 Pins 2 & 3 closed » RS-485 receiver disabled when JP7/B Pins 1 & 2 transmitting on port 3 closed RS-485 receiver always enabled on JP7/B Pins 2 & 3 port 3 closed USER CONFIGURABLE SETTINGS (CON’T) Setting Label Position RS-485 transmitter for port 3 enabled JP7/D Pins 2 & 3 on high RTS only closed RS-485 transmitter for port 3 enabled JP7/D Pins 1 & 2 whenever transmission is attempted closed RS-422/485 termination enabled on JP7/E Pins 1 & 2 port 3 closed RS-422/485 termination disabled on JP7/E Pins 2 & 3 port 3 closed » RS-485 receiver disabled when JP8/B Pins 1 & 2 transmitting on port 4 closed RS-485 receiver always enabled on JP8/B Pins 2 & 3 port 4 closed RS-485 transmitter for port 4 enabled JP8/D Pins 2 & 3 on high RTS only closed RS-485 transmitter for port 4 enabled JP8/D Pins 1 & 2 whenever transmission is attempted closed RS-422/485 termination enabled on JP8/E Pins 1 & 2 port 4 closed RS-422/485 termination disabled on JP8/E Pins 2 & 3 port 4 closed » Serial port 1 uses normal interrupt JP11/A Pins 1 & 2 set by JP8 closed Serial port 1 uses shared interrupt JP11/A Pins 2 & 3 set by JP8 closed » Serial port 2 uses normal interrupt JP11/B Pins 1 & 2 set by JP13 closed Serial port 2 uses shared interrupt JP11/B Pins 2 & 3 set by JP8 closed » Serial port 3 uses normal interrupt JP11/C Pins 1 & 2 set by JP7 closed Serial port 3 uses shared interrupt JP11/C Pins 2 & 3 set by JP8 closed » Serial port 4 uses normal interrupt JP11/D Pins 1 & 2 set by JP15 closed Serial port 4 uses shared interrupt JP11/D Pins 2 & 3 set by JP8 closed » Interrupt sharing disabled JP16 Pins 1 & 2 closed Interrupt sharing enabled JP16 Pins 2 & 3 closed SERIAL PORT 1 CONFIGURATION Setting JP1/A JP1/B JP1/C JP1/D JP3/A JP3/B JP3/C RS-232 Pins 2 Pins 2 Pins 2 Pins 2 N/A N/A Pins 2 & 3 & 3 & 3 & 3 & 3 RS-422 Pins 1 Pins 1 Pins 1 Pins 1 Pins 2 Pins 2 Pins 1 & 2 & 2 & 2 & 2 & 3 & 3 & 2 RS-485 Pins 1 Pins 1 Pins 1 Pins 1 Pins 1 See Pins 1 & 2 & 2 & 2 & 2 & 2 note & 2 Note:For correct settings of JP3/B for RS-485 mode, see its entry in the User Configurable Settings table. Pins designated are in the closed position. SERIAL PORT 2 CONFIGURATION Setting JP2/A JP2/B JP2/C JP2/D JP4/A JP4/B JP4/C RS-232 Pins 2 Pins 2 Pins 2 Pins 2 N/A N/A Pins 2 & 3 & 3 & 3 & 3 & 3 RS-422 Pins 1 Pins 1 Pins 1 Pins 1 Pins 2 Pins 2 Pins 1 & 2 & 2 & 2 & 2 & 3 & 3 & 2 RS-485 Pins 1 Pins 1 Pins 1 Pins 1 Pins 1 See Pins 1 & 2 & 2 & 2 & 2 & 2 note & 2 Note:For correct settings of JP4/B for RS-485 mode, see its entry in the User Configurable Settings table. Pins designated are in the closed position. SERIAL PORT 3 CONFIGURATION Setting JP9/A JP9/B JP9/C JP9/D JP7/A JP7/B JP7/C RS-232 Pins 2 Pins 2 Pins 2 Pins 2 N/A N/A Pins 2 & 3 & 3 & 3 & 3 & 3 RS-422 Pins 1 Pins 1 Pins 1 Pins 1 Pins 2 Pins 2 Pins 1 & 2 & 2 & 2 & 2 & 3 & 3 & 2 RS-485 Pins 1 Pins 1 Pins 1 Pins 1 Pins 1 See Pins 1 & 2 & 2 & 2 & 2 & 2 note & 2 Note:For correct settings of JP7/B for RS-485 mode, see its entry in the User Configurable Settings table. Pins designated are in the closed position. SERIAL PORT 4 CONFIGURATION Setting JP10/A JP10/B JP10/C JP10/D JP8/A JP8/B JP8/C RS-232 Pins 2 Pins 2 Pins 2 Pins 2 N/A N/A Pins 2 & 3 & 3 & 3 & 3 & 3 RS-422 Pins 1 Pins 1 Pins 1 Pins 1 Pins Pins Pins 1 & 2 & 2 & 2 & 2 2 & 3 2 & 3 & 2 RS-485 Pins 1 Pins 1 Pins 1 Pins 1 Pins See Pins 1 & 2 & 2 & 2 & 2 1 & 2 note & 2 Note:For correct settings of JP8/B for RS-485 mode, see its entry in the User Configurable Settings table. Pins designated are in the closed position. SERIAL PORT INTERRUPT SELECTION Setting JP12/A JP12/B JP12/C JP12/D JP12/E JP12/F IR/FONT> Closed Open Open Open Open Open IRQ3 Open Closed Open Open Open Open IRQ4 Open Open Closed Open Open Open IRQ5 Open Open Open Closed Open Open IRQ6 Open Open Open Open Closed Open IRQ7 Open Open Open Open Open Closed IRQ10 Open Open Open Open Open Open IRQ11 Open Open Open Open Open Open IRQ12 Open Open Open Open Open Open IRQ14 Open Open Open Open Open Open IRQ15 Open Open Open Open Open Open SERIAL PORT INTERRUPT SELECTION (CON’T) Setting JP12/G JP12/H JP12/I JP12/J JP12/K IR/FONT> Open Open Open Open Open IRQ3 Open Open Open Open Open IRQ4 Open Open Open Open Open IRQ5 Open Open Open Open Open IRQ6 Open Open Open Open Open IRQ7 Open Open Open Open Open IRQ10 Closed Open Open Open Open IRQ11 Open Closed Open Open Open IRQ12 Open Open Closed Open Open IRQ14 Open Open Open Closed Open IRQ15 Open Open Open Open Closed Note:JP12 sets the interrupt for port 1. The settings for JP13 through JP15 are identical and set the interrupts for ports 2 through 4, respectively. SERIAL PORT ADDRESS SELECTION Setting SW1/1 SW1/2 SW1/3 SW1/4 SW1/5 SW1/6 SW1/7 000h On On On On On On On 008h Off On On On On On On 010h On Off On On On On On 018h Off Off On On On On On 020h On On Off On On On On 2E8h Off On Off Off Off On Off (COM4:) 2F8h Off Off Off Off Off On Off (COM2:) 3D8h Off Off On Off Off Off Off 3E0h On On Off Off Off Off Off 3E8h Off On Off Off Off Off Off (COM3:) 3F0h On Off Off Off Off Off Off 3F8h Off Off Off Off Off Off Off (COM1:) Note: A total of 128 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/7 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/7=512, SW1/6=256, SW1/5=128, SW1/4=64, SW1/3=32, SW1/2=16, SW1/1=8. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0) SW1 sets the address for port 1. The settings for SW2 through SW4 are identical and set the addresses for ports 2 through 4, respectively.