DIZ4232 type 



 RS-232/485 address extension converter 

 First, use 

 RS-232 changed the address extension converter (Model: DIZ4232) for a host computer RS-232 or RS-485 port expansion into four address machine the RS-232 serial port. DIZ4232 the 4-bit machine the RS-232 port with address, send the address of the host computer command to be gated. Under the RS-232 serial port TXD (send), RXD (receive) and GND (signal ground) three signals. DIZ4232 applies to the following two conditions: a serial port expansion with the address of the four serial ports, two, originally with the address of the serial device access RS-485 bus. 

 Second, the installation and performance 

 DIZ4232 the outlook for the DB-25 (hole) / DB-25 (pin) adapter box size. DB-25 hole at one end to the host computer, with RS-232/RS-485/TTL level: access the DB-9 pin RS-232 using standard DB-9/25 serial adapter cable; access RS-485 terminals; take TTL user welding plugs and wiring. DIZ4232 requires an external 5V power supply, power on the product side of the terminal or RS-485 terminal board and power supply can be, but not two power supply. DIZ4232 the DB-25-pin side also supporting there with 4 the DB-9 pin seat of the board; 4 the DB-9-pin Block for 4 the next bit machine the RS-232 the mouth (0 # 1 # 2 # 3 #) in the corresponding position with the indicator. Send address instruction prior to use time-sharing strobe four machine the RS-232 port, strobe a port terminal board correspond to the location of the light will shine. Select the lower serial port addresses only need to add a command, just power up default 0 # port through 0 # light. Strobe support communication speed 0-115.2Kbps automatically adapt. Four-bit machine the RS-232 port also outside the plug Boshi RS-232/RS-485 converter and so on. Send one with the product of about 0.5 m long standard DB-9/DB-25 adapter extension cable, a 5V power supply. 

 The, DIZ4232 the address set instruction 

 Various serial peripherals the access DIZ4232 expander communications before, you must first side from the host computer serial port (RS-232/RS-485/TTL may be) to the corresponding products to 9600bps rate to send the following instructions to gating of a a next bit machine. 

 ASCII instructions 
 Instruction hexadecimal code 
 Instruction 10 hex code 
 Function 
 Status 

 ESC% A 
 1B 25 41 
 273 765 
 0 # strobe, the other disconnect 
 0 # light 

 ESC% B 
 1B 25 42 
 273 766 
 Strobe # 1, other disconnected 
 # 1 lights 

 ESC% C 
 1B 25 43 
 273 767 
 Strobe # 2, other disconnected 
 # 2 lights 

 ESC% D 
 1B 25 44 
 273 768 
 Strobe # other disconnect 
 # 3 lights 



 Use serial debugging aides settings in Visual Basic to set up and communication 

 Four, DIZ4232 of a typical application 

 4.1 for the expansion of the microcontroller, computer time-sharing RS-232 port 

 Microcontroller or computer, as long as three-wire serial port, either RS-232 level or TTL level, or half-duplex RS-485 port can be used a DIZ4232 extended four RS-232 port. As long as the user allows the microcontroller or computer to the host computer side to send in DIZ4232 strobe address of the instruction can. 

 4.2 will not be able to set the address of the RS-232 devices to access RS-485 bus 

 Every one DIZ4232 use can be an RS-232 device is connected to the RS-485 bus, you can use up to four DIZ4232, the 4 DIZ4232 host computer side of the RS-485 parallel (all A connected together all B connected together all GND together), the access RS-485 bus. Note that each of the four RS-232 device must be connected to the different number of machine mouth. Such as RS-232 device A then 0 # port of a DIZ4232 an RS-232 device B connected to a port # DIZ4232 an RS-232 device C connected to a DIZ4232 # port, an RS The -232 device D connected to a DIZ4232 3 # port. So that the host computer via RS-485 bus to send election address instruction to choose to communicate through an RS-232 devices, each selected through an RS-232 devices to communicate and will not conflict. 

 V. Appendix 

 5.1 DIZ4232 DB-25 hole pin is allocated as follows: 

 A 
 2 
 3 
 4 
 5 
 6 
 7 
 8 
 9 
 10 
 11 
 12 
 13 

 TXD 
 RXD 
 GND 
 -B 
 + A 

 14 
 15 
 16 
 17 
 18 
 19 
 20 
 21 
 22 
 23 
 24 
 25 

 GND 
 +5 V 
 rx 
 tx 




 Note :2-the TXD 3-RXD refers to the RS-232 level (computer), the direction of the TXD refers to external sent to the inside of the product. 

 24-rd and the 25-tx is TTL level (SCM), tx direction refers to from the outside to the inside of the product sent. 

 5.2 DIZ4232 DB-25 pin pin is allocated as follows: 

 A 
 2 
 3 
 4 
 5 
 6 
 7 
 8 
 9 
 10 
 11 
 12 
 13 

 GND 
 GND 
 GND 
 GND 
 RXD0 
 RXD1 
 RXD2 
 RXD3 
 LED0 
 LED1 

 14 
 15 
 16 
 17 
 18 
 19 
 20 
 21 
 22 
 23 
 24 
 25 

 GND 
 GND 
 GND 
 GND 
 TXD0 
 TXD1 
 TXD2 
 TXD3 
 +5 V 
 LED2 
 LED3 




 Note: LED refers to the indicator light signal is active low. The TXD direction to send out from the inside of the product (computer) for RS-232 level.