MicroRidge WedgeLink AT User manual

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Introduction
This document reviews how the “Auto Baud Rate Detection” feature
is used to connect an RS-232 serial output device to the WedgeLink
AT keyboard wedge
The WedgeLink AT User’s Guide contains multiple definitions of this
feature. This document will use the phrase “Auto Baud”.

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WedgeLink AT
Back panelFront panel
DB9 male input
connect RS-232
device here
Integrated
Send button External Switch port USB serial port
for device setup USB keyboard
wedge port
for data output
Reset
button
Red/Green
Bi-color LED

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Required Items
WedgeLink AT
RS-232 output device
Device data cable
Your cable may look different
DB9 female end connects to
the WedgeLink AT

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Overview
To send data from an RS-232 device to a WedgeLinkAT, the baud
rate and communication parameters settings must be the same on
both devices
These parameters may be changed on the WedgeLinkAT or the RS-
232 device
The WedgeLinkAT parameters can be set manually or by using the
“Auto Baud” function

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Communication Parameters
RS-232 communication parameters consists of four variables:
WedgeLink AT default is 9600-N-8-1
9600 baud, No parity, 8 data bits, 1 stop bit
Variables Options
Baud Rate Multiple Options
Parity None, Even, Odd
Data Bits 7 or 8
Stop Bits 1 or 2

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Auto Baud Feature
This feature is used when the parameters of your RS-232 device are
unknown
The RS-232 device must have a DATA, SEND, or PRINT button to
use the Auto Baud feature
Your device’s data send function may need to be activated
If the RS-232 device requires a software command to send a
measurement, you cannot use theAuto Baud feature

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Installation
Connect the WedgeLink AT to
your computer using either the
“Wedge” or “RS-232 & Prog”
ports
Wait for the front panel LED to
turn off
Connect your RS-232 serial
device to the WedgeLinkAT
DB9 input port
RS-232 &
Prog port Wedge
port

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Device Connected

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Auto Baud Process
1. Press and release the Reset
button on the back of the
WedgeLinkAT
2. The LED will briefly display
red and then display green for
5 seconds
3. Press the RS-232 device
“send data” button while the
green LED is on
Reset
button

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Possible Results
The results of the Auto Baud process will be indicated by the
WedgeLink AT front panel LED
LED blinks GREEN 5 times
Parameters were identified and stored in the WedgeLink AT
LED blinks RED 5 times
Parameters could not be identified, no changes were made to the
WedgeLink AT
LED turns off without blinking
No data was received, no changes were made to the WedgeLink AT
Retry process if this occurs

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No Data Received
If the WedgeLink AT is unable to determine the parameters, it
is likely due to one of the following reasons:
The data cable is not correct for your RS-232 device
Not enough data was sent from the RS-232 device
3-8 characters are required to determine the parameters
The RS-232 device baud rate is not supported
Next slide lists the supported communication parameters

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Supported Parameters
9600-N-8-1 factory default parameters selected

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Setup Program
Communication parameters
can be manually set using the
WedgeLink AT Setup program
This program also provides
access to the WedgeLink AT’s
data parsing features
To use the Setup program, the
USB driver must be installed

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Disable Auto Baud
By default, theAuto Baud
feature is enabled on the
WedgeLink AT
Click on the “Set Parameters
button on the Home Tab to
disable the Auto Baud feature

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Manual Setup
Selecting “No” disables the
Auto Baud feature
Manually select the baud rate,
parity, data bits, and stop bits
To save, return to the Home tab
and click this button

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Tech Support
Contact MicroRidge for assistance in using the Auto
Baud Rate Detection feature
Mon-Fri, 8am-4:30pm PST
541-593-1656
[email protected]