Toshiba AS311 Manual De Usuario

ASCII Interface Module (AS311) 

 
 

 
 

 

The ASCII interface module AS311 (hereafter called AS311) is a general purpose data 

 

 

communication module for Toshiba’s Programmable Controller PROSEC-T3 (hereafter 

 

 

called T3). By using the AS311, T3 can communicate with external devices, such as a 

 

 

micro computer, bar code reader, printer, display device, sensor,  etc., through the  

 

 

serial interface RS-232C or RS-422. 

 
 

 

The AS311 has two ports of the serial interface. One port (channel 1) can be selected 

 

 

either RS-232C or RS-422 by switch setting. The other port (channel 2) is RS-232C 

 

 

interface. These two ports can be used independently for data receiving and  

  

transmitting. 

 
 

 

The transmission is asynchronous (start-stop system). 

 

 

ASCII is used as the transmission data code.  

 
 

 

The figure below shows the typical system configuration. 

 
 

 
 
 

The maximum number of AS311 that can be controlled by one T3 is not limited by 
software. However, this module consumes maximum 1 A of internal 5 Vdc power. 
Confirm that the total 5 Vdc consumed current per one power supply  module is 
within the limit (7 A).  

 

CPU module

T3

Channel 2
RS-232C

Channel 1
RS-232C or RS-422

AS311

    NOTE