User Manual Part 1

CHAPTER 2
MODES OF OPERATION
Revised: 15 Oct 03 2-1 EST P/N AA104
The ESTeem has three major modes of operation, Command, Converse, and Transparent. This chapter of the manual describes
each one of these modes.
COMMAND MODE
The COMMAND Mode (CMD: prompt) is the default mode that the ESTeem initially enters on power-up or after a hardware or
software reset. From this mode the user can command or program the ESTeem. In this mode the user may access the various
program commands to configure the ESTeem for the specific application. These values can be stored in nonvolatile memory
within the ESTeem by the use of the SAVE command. The ESTeem reads these setup parameters stored in memory on power-up
or RESET.
When programming in the COMMAND Mode, the user need only enter enough characters to uniquely identify the respective
command.
Example: CMD:ADD 15 <Enter>
This enters the source address of the ESTeem to the decimal value of 15. The first three letters ADD were enough for the
ESTeem to uniquely identify the command for ADDress. The number of characters that need to be typed varies depending
upon the command being entered. In some cases, four or even more letters may have to be entered in order for the identification
to be uniquely determined. Up to ten multiple commands can be written on the same line if separated by a colon.
Example: CMD:ADD 15:SETC 2:SAVE <Enter>
CONVERSE MODE
This mode allows bi-directional communication from the input/output device attached to the ESTeem to a destination ESTeem
and its respective input/output device. The ESTeem will automatically switch to the CONVERSE Mode after the initial
CONNECT has been made.
When the ESTeem is in the CONVERSE Mode the * prompt will be displayed. The ESTeem will remain in the CONVERSE Mode
until the radio link has been broken or by typing a control character defined by the user with the COMMAND variable.
The factory default for the COMMAND variable is CTRL C. You can return to the CONVERSE Mode from the COMMAND
Mode by typing CONV <Enter>.
When you are in the CONVERSE Mode the echoing of the character comes from the ESTeem if ECHO = ON (factory default) has
been programmed in the ESTeem.
Transmitting Data
The ESTeem will transmit data from the CONVERSE Mode if one or more of the following conditions have been met.
1. The ESTeem transmit buffer has been filled. The size of the transmit buffer is defined in the ESTeem by the PACKLEN
variable. This variable is programmable from 1 to 2000 bytes. Factory default is 2000.
2. The ESTeem receives a SENDPAC (send packet) character from the RS-232C input data stream. The SENDPAC variable can
be defined from 0 to 255 by the user. Factory default is 13 (carriage return). The SENDPAC character is also transmitted by
the ESTeem. In file dump applications the SENDPAC character can be programmed to be the EOF (end of file) character
transmitted from the sending device (i.e.; CTRL Z, CTRL G, etc.).