AT Commands and S-Registers
B-25
Issue 1 April 1994
Table B-1. AT Command and S-Register List (24 of 34)
AT
Command/
S-Register
Description
&R
n
RTS (Request To Send) Action
Determines the handling of the Request To Send
signal.
&R0
Follows standard RS-232 operation: RTS
must be on for the computer to transmit to
the DataPort 2001.
&R1
Ignore.
&R2
Simulated Control Carrier.
&S
n
DSR (Data Set Ready) Control
Determines the handling of the Data Set Ready
signal.
&S0
Forced ON.
&S1
Follows standard RS-232 operation: the
DataPort 2001 controls DSR.
&S2
Forced on, but turns off momentarily when
disconnected.
&S3
Follows DTR.
&S4
ON early (when data mode command is
entered).
&S5
Delay until Data mode is entered.