PIONEERPOS G24-L manual +MTCTS, CTS Line Test Command, RTS/CTS Flow Control, 86 +MTDTR Parameters

Chapter 3: AT Commands Reference

The following table shows the +MTDTR parameters.

Table 3-86: +MTDTR Parameters

<Parameter>		Description
<n>	0	DTR OFF
	1	DTR ON

Example

AT+MTDTR?

+MTDTR:1

OK AT+MTDTR +MTDTR:1

OK AT+MTDTR=?

OK

+MTCTS, CTS Line Test Command

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

Command Type	Syntax	Response/Action
Execute	AT+MTCTS	OK

Example

AT+MTCTS

OK

&K, RTS/CTS Flow Control

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

April 15, 2008 G24-L AT Commands Reference Manual 3-135