PioneerPOS G24-LC 用户手册

The following table shows the +MTDTR parameters.

This command sets the CTS pin of the RS232 to active high, waits one second and then returns 
the CTS to active low.

This command configures the flow control. The RTS (Request To Send) is an input line. The RTS 
signal is received from the terminal and a low condition indicates that the G24-L can send more 
data. The CTS (Clear To Send) is an output line. The CTS signal is sent to the terminal and a low 
state indicates that more data can be sent to the G24-L.

The RTS and CTS together make up what is called RTS/CTS or “hardware” flow control. Both 
lines are used when “hardware flow control” is enabled in both the terminal and the G24-L 
devices. When the terminal is ready and able to receive data, it puts the RTS line in an active 
(low) condition to indicate this to the G24-L. If the terminal is not able to receive data (typically 
because its receive buffer is almost full), it puts the RTS line in an inactive (high) condition as a 
signal to the G24-L to stop sending data. When the terminal is ready to receive more data (for 
example, after data has been removed from its receive buffer), it places this line back in the active 

0

 DTR OFF

1

 DTR ON