Elecraft W1 - Manual (Page 14)

14
Serial Interface Commands
The W1 responds to commands for data supplied by the external system. Nothing is sent until a command is received by the
W1. These requests are in the form of a single letter as shown below. The user sends a single character and receives one data
string in response. The semicolon (;) is an end-of-string identifier, and will be at the end of every return string. All strings are
fixed length; a space may be added to some strings to ensure this.
Command
Purpose
Request forward-power bargraph level and
present range.
String Length 5 chars.
Response Bnn;
B
Notes
is the Range (Low|Medium|High)
nn is 00 (no LEDs lit) to 10 (all LEDs lit).
Purpose
Request reverse-power bargraph level and
present range.
String Length 5 chars.
Response Cnn;
C
Notes
is the Range (Low|Medium|High)
nn is 00 (no LEDs lit) to 10 (all LEDs lit).
Purpose Request SWR bargraph level.
String Length 4 chars.
Response Dnn;
D
Notes nn is 00 (no LEDs lit) to 10 (all LEDs lit).
Purpose Request Forward Power in Watts.
String Length 6 chars.
Response F;
F
Notes
Response is floating point.
n.nn is power from 0.000 to 9.99 watts nn.n
is power from 10.00 to 99.9 watts
nnn is power from 100.0 to 149 watts.
Purpose Toggles W1 LEDs on or off.
String Length 5 chars.
Response L;
L
Notes Power On default is On.
Purpose
Toggles between an Average or PEP
display of Forward Power LEDs.
String Length 5 chars.
Response M;
M
Notes Current setting can be saved in memory.
Purpose
Toggles between an Average or PEP value
of Power serial data.
String Length 5 chars.
Response M;
N
Notes Current setting can be saved in memory.
Command
Purpose
Toggles between regular LED bargraph or
Peak-Hold + bargraph.
String Length 5 chars.
Response PK;
P
Notes
Peak-hold default is No. Current setting
can be saved in memory.
Purpose Request Reverse Power in Watts.
String Length 6 chars.
Response R >;
R
Notes
Response is floating point.
n.nn is power from 0.000 to 9.99 watts
nn.n is power from 10.00 to 99.9 watts
nnn is power from 100.0 to 149 watts.
Purpose Request the SWR value.
String Length 6 chars.
Response Snn.n;
S
Notes nn.n is the SWR from 1.0 to 99.9.
Purpose
Request the user settings that were last
stored in EEPROM
String Length 6 chars.
Response U;
U
Notes
First A or P is Average power or PEP for
Forward Power LEDs. Second A or P is
Average power or PEP for Forward or
Reverse Power serial data. First S or M or
F is Slow or Medium or Fast LED decay
Rate. Second S or M or F is Slow or
Medium of Fast Range drop rate.
Purpose Request the firmware version.
String Length 6 chars.
Response Vn.nn;
V
Notes n.nn is the version of 1.00 to 9.99.
Purpose
Writes to EEPROM the user settings
currently being used in RAM
String Length 4 chars.
Response WOk; ("Write attempt OK").
W
Notes