Section 6
Parameter Settings
50
FT205EV Wind Sensors
– User Manual
6.4.7
CI: Set or Query the Communication Interface (RS485, RS422, UART)
Command
Parameter
CI
Command
Syntax
SET Sensor:
$<listenerID>,CI<interface>*<checksum><cr><lf>
$aa,CIc*hh<cr><lf>
or
$aa,CIcc*hh<cr><lf>
QUERY Sensor:
$<listenerID>,CI?*<checksum><cr><lf>
$aa,CI?*hh<cr><lf>
Sensor output:
$<talkerID>,CI=<interface string>*<checksum><cr><lf>
$aa,CI=ccccc*hh<cr><lf>
QUERY RS422
Transmitter Mode:
$<listenerID>,CI?2*<checksum><cr><lf>
$aa,CI?2*hh<cr><lf>
Sensor output:
$<talkerID>,CI=<RS422 tx mode>*<checksum><cr><lf>
$aa,CI=c*hh<cr><lf>
Parameters
<interface>
8
Set the RS485 interface (Factory Default Setting)
2A
Set the RS422 interface with the transmitter always enabled.
2I
Set the RS422 interface with the transmitter disabled when not transmitting.
U
Set the UART communication interface
<interface string>
RS485
The RS485 Interface is enabled.
RS422
The RS422 Interface is enabled.
UART
The UART Interface is enabled.
<RS422 tx mode>
A
The RS422 transmitter is always enabled.
I
The RS422 transmitter is disabled when not transmitting.
Examples
Example 1
Enable the RS485 interface. Verify that the command has been accepted.
Message
Comment
$01,CI8*//<cr><lf>
Enable RS485
$01,CI?*//<cr><lf>
Query communications interface
$WI,CI=RS485*3D<cr><lf>
Sensor response
Example 2
Enable the RS422 interface with the transmitter always enabled. Verify that the interface and
transmitter settings.
Message
Comment
$01,CI2A*//<cr><lf>
Enable RS422 with transmitter on
$01,CI?*//<cr><lf>
Query communications interface
$WI,CI=RS422*30<cr><lf>
Sensor response
$01,CI?2*//<cr><lf>
Query RS422 transmitter mode
$WI,CI=A*44<cr><lf>
Sensor response
Description
Use the CI command to switch between communications interface modes. Only one
communications interface can be used at a time, however the sensor is able to receive host
commands through any of the three supported interface modes.
When selecting the RS422 interface, the sensor
’s RS422 transmitter may be set to remain
permanently enabled (or only enabled during message transmission).