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Connection Host Error Feedback
If you are using the ActiveX control in your Application Server, you can periodically check for any error
codes present by calling GetErrorCode. Codes are set for Warning and Error conditions on the Connection
Host. Look at the log file (if you have the ActiveX configured to generate one) for details on the error codes.
Code Level
Possible values
0
Nothing to report
0-9, A-Z, a-z, - =
3
Error
Serial Output Data Too Long
7
Connection Host Warning
deleted FromTerminal records
on SignIn
deleted FromServer records on
SignIn
Sequence Error, data already
present from this terminal
Timed out waiting for data from
Application Server
8
Connection Host Error
Couldn't execute query xxx
Couldn't add data to xxx table
Couldn't read from xxx table
Couldn't delete data from xxx
table
Illegal Command
When a terminal receives an illegal statement from the host, it will display the entire statement on the
terminal. Once the ENTER key is pressed on the terminal, the terminal sends a “?” back to the Host.
Byte position Function
Possible values
1
Illegal Command
?
Last
Termination of
message
CR (ASCII 13)
For example, if Terminal a received an illegal command, the it would transmit to the host:
?CR
If the Terminal receives more than 1000 characters, it treats that statement as an Illegal Command.
Automatic Check Back
When a terminal checks back in to see if there is a change in instructions, the host can send back the same
prompt or send back a new prompt. The check back occurs according to the time specified in the Terminal's
setup, (specified in increments of 5 seconds). When a check back occurs, the Terminal clears the screen of
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