Specifications

Appendix F – Embedded Control Characters - 17
Appendix F – Embedded Control Characters
To embed a control character in a paging message, include a <SUB> control character followed by an offset
version of the control character you want to embed. You offset the control character by adding 40 HEX to
the control character, to make the character printable. Adding 40 HEX to Carriage Return gives you M.
Adding 40 HEX to Line Feed gives you J. The character combination of <SUB>M causes a Carriage
Return control character to be embedded in the encoded paging message, while <SUB>J causes a Line
Feed control character to be embedded. The <SUB> character needs to be passed to the SPS-5 Paging
System as a HEX character.
In the WaveWare Paging Encoder Setup software, you can embed a Carriage Return by entering <CR> in
the message body, and embed a Line Feed character by entering <LF> in the message body.
In the Microsoft Visual Basic programming language, you can use the following code example to define the
embedded control character string to be delivered through the serial port to the paging system. In this
example, we are embedding only the Carriage Return control character:
DIM CarriageReturnString As String,
DIM MessageLine1 As String
DIM MessageLine2 As String
DIM TXString As String
CarriageReturnString = Chr(26) & "M"
LineFeedString = Chr(26) & "J"
MessageLine1 = "Line 1 of test message"
MessageLine2 = "Line 2 of test message"
TXString = MessageLine1 & CarriageReturnString & MessageLine2
form1.MSComm1.Output = TXString