Wavetronix Click 421 Guide

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Using the Click 421

The Click 421 serial to Bluetooth radio converts half-duplex two-wire RS-232 and 485 communication to Bluetooth

and vice versa. Use this device in a cabinet to transfer data from a sensor to your computer via a wireless

Bluetooth connection.

Physical Features

The Click 421 has several communication ports, plus features for conﬁguration.

Bluetooth

T-Bus

Connector

RS-232

Connector

Antenna

Connector

LED Indicators

Mode

Switch

RS-232 Connector

RS-485 Connector

TOP

FRONT

Communication Ports

The back of the Click 421 features a 5-position connector that plugs into a T-bus connector and provides power and

RS-485 communication to the device. It also passes that RS-485 communication to all other devices on the T-bus.

The top of the device has two pluggable screw terminal blocks. The ﬁrst block features -485, +485 and two

ground screw terminals for wiring RS-485 communication. (It will not be necessary, however, to wire RS-485

through the screw terminal block if the device is connected to a T-bus with uninterrupted RS-485 communication.)

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The second block features RTS, CTS, TD, and RD screw terminals for RS-232 communication. Both of these screw

terminal blocks can be removed for easy preinstallation wiring.

The front of the Click 421 features a DB-9 connector for RS-232 communication. A straight-through cable can be

used to connect from this port to a computer so that the device can be conﬁgured using Click Supervisor.

Any data on one port will be transmitted simultaneously on all other ports.

Antenna

The Click 421 has a reversed polarity SMA antenna connector. An external antenna can be mounted on the

exterior of the trac cabinet or up on a pole for maximum range. A whip antenna can also be used inside the

cabinet. If the antenna is installed inside a metal cabinet, the range will be diminished.

Conﬁguration Features

The other three LEDs are activity indicators.

■ PWR (red) lights up when the device has power.

■ Bluetooth Link (blue) lights up when a link is successfully made over Bluetooth to an external device.

■ TD (green) lights up when the device is transmitting data.

■ RD (yellow) lights up when the device is receiving data.

The LEDs are also used to indicate operation modes, which will be discussed later in the On-device Conﬁguration

section of this document.

The front also has a push-button labeled Mode Switch, which is used to cycle the Click 421 through operation

modes. This will be discussed later in the On-device Conﬁguration section.

On-device Conﬁguration

The Click 421 can be conﬁgured using the push-button on the lower part of the faceplate. Press and hold the

push-button to cycle through the dierent operation modes; release the button when the desired mode is

reached. A quick press and release of the push-button will exit out of any mode and return the unit back to normal

operation. The table below and the following sections describe the dierent operating modes.

Mode LED Deﬁnition

Autobaud Green (solid) To autobaud the Click 421, press the push-button, then release when the green

LED turns on. The Click 421 is autobauding when the green LED is on and the red

LED is blinking.

Link Test (Server) Blue (ﬂashing) To set the Click 421 in Link Test mode as a server, press the push-button, then

release when the blue LED is blinking. The Click 421 is transmitting data if the red

LED comes on and the green LED blinks.

Reset Red (ﬂashing) To reset the Click 421 to factory defaults, press the push-button, then release

when the red LED is blinking.

Autobaud (green solid)

The Autobaud mode is used to match baud rates with an external device. By default, the module will attempt to

match baud rates with a SmartSensor on the bus; however, the device can be conﬁgured to autobaud with any

device that supports a serial interface.

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During the autobaud process, the green LED will stay on and the red LED will ﬂash after every autobaud cycle (the

cycle time increases as latency is added after each cycle). If the autobaud was successful, the red LED will turn o

and the green and yellow LEDs will ﬂash; if the autobaud is not successful after a few minutes of trying, the yellow

LED will come on.

Link Test in Server Mode (blue ﬂashing)

In Server mode, the Click 421 performs a link test, pushing a series of characters—the alphabet—to a connected

Bluetooth device. Follow the steps below to perform a link test:

Note. Before you perform a link test, you must use your handheld computer, laptop or other external device to

establish a connection with the Click 421.

1. Press the push-button on the faceplate of the device, then release when the blue LED blinks. While the link

test is running, the red LED will glow solid and the green LED will blink.

2. Watch the LEDs. The blue LED will come on to indicate that there is a connection to the external Bluetooth

device you are connected to. If the connection is no longer valid, the blue LED will never come on and the

device LEDs will remain in the state outlined in step 1.

3. To check if the data being pushed to the laptop or handheld is good, open a terminal emulation program such as

HyperTerminal and connect to the Bluetooth signal. Observe the data being received. It should be the alphabet

repeated continuously; if nothing comes or any letters are missing, the data is not being received or is corrupted.

4. To stop the link test and return the Click 421 to normal operation, press the push-button once.

Factory Reset (red ﬂashing)

The Factory Reset operation will erase all user-conﬁgured ﬁelds, meaning that after the reset, the Click 421

may have to be reconﬁgured to work properly in its current application. If a device is not responding and

not communicating, resetting the device may ﬁx the problem. Once the device is responding, restore the

conﬁguration needed for its current application.

To reset the Click 421 to factory defaults, release the push-button when the red LED begins ﬂashing. The red LED

should blink slowly, then the green and yellow LEDs will ﬂicker. When the red LED glows solid, the module has the

original factory conﬁguration.

Computer Conﬁguration

The Click 421 can be conﬁgured more exactly using the Click Supervisor software. See the knowledge base

article 0514 Installing and Using Click Supervisor for instructions on how to download and install Click Supervisor

and how to connect to your device using the software.

The Click 421 can be conﬁgured using one of two drivers (see the ﬁgure below).

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If you intend to connect from your computer to the Click 421 to a sensor, use the SmartSensor driver.

To see advanced settings, use the Expert driver. This driver, which exposes every available ﬁeld for the Click 421,

should only be used under the direction of Wavetronix Support.

After you have made conﬁguration changes on a driver and saved it to the Click device, the word “current” will

appear after that driver to indicate the driver that is currently loaded onto the device.

Note. Changing any of the settings on any driver and saving them to the Click device will change those settings

on all drivers.

The Backups option can be used to read conﬁgurations that have previously been saved to ﬁle.

SmartSensor Driver

When you open the SmartSensor driver, you will see three tabs: Setup, About, and Diagnostics.

Under the Setup tab, you can change the settings aecting the setup of the Click device (see ﬁgure and table below).

Setting Description

Description Shows a description of the device being conﬁgured. This is only for your information and does not aect

the operation of the device.

Location Displays the location of the device being conﬁgured. This is only for your information and does not aect

the operation of the device.

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Device ID Gives the ID number of the device being conﬁgured, which is used to identify the device when you are

connecting to it. By default, this number is the last ﬁve digits of the serial number, which can be found

under the About tab or on the barcode sticker on the bottom of the device. It is recommended that you do

not change this number unless another device on the network has the same ID number.

Baud Rate Allows you to change the baud rate at which the device connects to the sensor.

Under the About tab, you can view information about your Click 421 (see the ﬁgure and table below).

Setting Description

Driver Names the driver you are currently working with.

Serial Number Displays the serial number of your device.

Firmware Version Shows the version of ﬁrmware your device currently has installed. If Click Supervisor detects a

discrepancy between this version and the most current version it currently has access to, you will

be prompted to upgrade when you connect to the device.

Bluetooth Name Shows the name of the device, which is broadcast with the Bluetooth signal. This name can be

changed in the Expert driver.

Under the Diagnostics tab, you can run diagnostics on your device (see the ﬁgure below). Click the General or

Bluetooth buttons to run diagnostics on the items listed below each button. If a problem is detected, the program

will display a red square next to the item in question. If no problems are detected, a green circle will appear.

Once you have ﬁnished, use the menu bar at the top of the screen to save your settings, return to the Select

Driver screen, and more.

■ The Save menu allows you to save your settings. Select Save to File to save your settings to a ﬁle. Selecting this

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will open a directory box, allowing you to name your settings ﬁle. This ﬁle will always be saved in the Wavetronix

folder created when you installed Click Supervisor, under Wavetronix > ClickHome > Drivers > 421 > User. You

can also select Save to Device to save your settings to your Click 421.

Note. If you do not save your settings to your Click 421, they will be lost the next time you power the device down.

■ The Tools menu contains ﬁve options for working with your device. Reset > System power cycles your device,

while Reset > Factory Default restores your device to the settings with which it was shipped. Restore will restore

the driver to the settings currently saved on the Click 421, erasing any unsaved changes. Upgrade can be used

to manually upgrade to the most current ﬁrmware for your device. Hex View changes the view of certain settings

in the driver to hexadecimal.

■ Clicking the Quit menu exits the driver and returns you to the Click Supervisor main page.

Expert

The Expert driver allows you to see all possible settings and ﬁelds, both those available in the SmartSensor

driver and those available only through this driver. The driver is divided into three tabs, System, Bluetooth, and

Diagnostics.

The System tab is divided into three subtabs: General, Comm, and Autobaud.

The General subtab contains information about the device (see the ﬁgure and table below).

Setting Description

Module Shows the name of the Click device.

Driver Names the driver you are currently working with.

Description Shows a description of the device being conﬁgured. This is only for your information and does not

aect the operation of the device.

Location Displays the location of the device being conﬁgured. This is only for your information and does not

aect the operation of the device.

Serial Number Displays the serial number of your device.

Firmware Version Shows the version of ﬁrmware your device currently has installed. If Click Supervisor detects a

discrepancy between this version and the most current version it currently has access to, you will be

prompted to upgrade when you connect to the device.

Subnet ID Shows the subnet ID number. This option is currently not available.

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Device ID Gives the ID number of the device being conﬁgured, which is used to identify the device when you

are connecting to it. By default, this number is the last ﬁve digits of the serial number, which can be

found under the About tab or on the barcode sticker on the bottom of the device. It is recommended

that you do not change this number unless another device on the network has the same ID number.

The Comm subtab allows you to conﬁgure how the Click device communicates (see the ﬁgure and table below).

Setting Description

Baud Rate Allows you to change the baud rate at which the device connects to the sensor.

Flow Control Is used for conﬁguring hardware handshaking. This option is currently not available.

Parity Allows you to set parity error checking.

Stop Bits Allows you to set the number of stop bits.

Data Bits Shows you the number of data bits being sent. This option cannot be changed.

Active Port Indicates on which port you are communicating with the sensor. This option cannot be changed.

Latency Indicates the latency between the sensor and the Click device. This option cannot be changed.

The Autobaud subtab allows you to conﬁgure how the device autobauds (see the ﬁgure and table below).

Setting Description

Command Allows you to set the command sent from the device during the autobaud process. Don’t change

these values unless instructed to by Wavetronix Technical Services.

Response Shows the response the device is expecting from the above command. Don’t change these values

unless instructed to by Wavetronix Technical Services.

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SmartSensor ID Shows the ID number of the sensor with which the Click device is currently communicating. This

only shows the number after you have autobauded the Click device; when the Click device is not

communicating with a sensor, this option will display a 0.

Server/Client Allows you to set whether the device is a server or client in a point to multipoint setup (this option is

not related to device autobauding). This option is currently not available.

The Bluetooth tab allows you to conﬁgure your device’s Bluetooth communications (see the ﬁgure and table below).

Setting Description

Bluetooth Name Allows you to change the name of your Bluetooth device, which is broadcast with the Bluetooth signal.

Power Level Lets you change the power level of the Bluetooth signal; the options are 25%, 50%, 75% and 100%.

Password Provides a ﬁeld to enter the password to be used, if you have enabled the use of a password on

the Bluetooth signal.

Password Enable Enables the use of a password on the signal.

Note. If you decide to password protect your Click 421, be sure to keep a good record of the password you

choose. Wavetronix is not able to recover passwords or remove password protection from a device, so if the

password is ever forgotten or lost, it will render the module unusable.

Under the Diagnostics tab, you can run diagnostics on your device. Click the General or Bluetooth buttons to run

diagnostics on the items listed below each button. If a problem is detected, the program will display a red square

next to the item in question. If no problems are detected, a green circle will appear.

Once you have ﬁnished, use the menu bar at the top of the screen to save your settings, return to the Select

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© 2022 Wavetronix LLC. All rights reserved. Protected in the US by patents viewable at www.wavetronix.com/en/legal. Protected by Canadian Patent Nos. 2461411; 2434756; 2512689; and European Patent Nos. 1435036; 1438702;

1611458. Other US and international patents pending. Wavetronix, SmartSensor, Click, Command and all associated logos are trademarks of Wavetronix LLC. All other product or brand names as they appear are trademarks or

registered trademarks of their respective holders. Product speciﬁcations are subject to change without notice. This material is provided for informational purposes only; Wavetronix assumes no liability related to its use.

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