Command Mode - HORNER HE800WCM802 Supplement Manual

WCM802/900

Command Mode

To modify or read module parameters, the module must first enter into Command Mode, the
state in which incoming characters are interpreted as commands. Two command types are
available for programming the module:
For modified parameter values to persist in the module registry, changes must be saved to non-
volatile memory using WR (Write) Command. Otherwise, parameters are restored to previously
saved values after the module is powered off and then on again.
AT Commands
To Enter AT Command Mode:
1.
2.
Default AT Command Mode Sequence (for transition to Command Mode):
To Send AT Commands:
Send AT commands and parameters using the syntax shown below:
Figure 2.9. Syntax for sending AT Commands
The preceding example would change the module Destination Address to "1F". To store the new
value to non-volatile (long term) memory, subsequently send the Write (ATWR) Command.
System Response. When a command is sent to the module, the module will parse and execute
the command. Upon successful execution of a command, the module returns an "OK" message. If
execution of a command results in an error, the module returns an "ERROR" message.
To Exit AT Command Mode:
1.
2.
For an example that illustrates programming the module using AT Commands, refer to the
"Advanced Programming" chapter.
• AT Commands
• Binary Commands
Send the 3-character command sequence "+++" and observe guard times before and after
the command characters. [See "Default AT Command Mode Sequence" below.] The
"Terminal" tab (or other serial communications software) of the RADIOSET Software can be
used to enter the sequence.
[OR]
Assert (low) the
• No characters sent for one second [see BT (Guard Time Before) Command]
• Input three plus characters ("+++") within one second [see CC (Command Sequence
Character) Command.]
• No characters sent for one second [see AT (Guard Time After) Command.]
NOTE: To read a parameter value stored in a register, leave the parameter field blank.
Send ATCN (Exit Command Mode) Command.
[OR]
If no valid AT Commands are received within the time specified by CT (Command Mode
Timeout) Command, the Module automatically returns to Idle Mode.
20 JUN 2005
pin and either turn the power going to the module off and back on.
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