Epson RC170 Guia do Utilizador descarregar pdf (Página 176)

6. The SPEL+ Language

6.9 Multi-statements

A program statement can contain several statements separated by semi-colons. The total

length of a multi-statement program line cannot exceed 200 characters.

For example:

Function Test

Pass P1; Pass P2; Go P3 ' Multi-statement

Fend

Even though multi-statements are supported (mainly for compatibility), it is strongly

recommended that they not be used. Multi-statements can make your code more difficult

to read and debug.

6.10 Labels

A program label is an alphanumeric name followed by a colon (":") that marks a location

in a program for a GoTo or GoSub statement. The name may be up to 32 characters long

and can include alphanumeric characters and the underscore ("_") character if it is not the

first character. You cannot use any SPEL

keywords as labels.

For example:

Function Main

Jump P1

Jump P2

If Sw(1) Then GoTo MainAbort

Loop

MainAbort: ' Program label

Print "Program aborted"

Fend

6.11 Comments

Use comments to add notes to your programs. An apostrophe character (') starts a

comment.

Examples of comments

Function Main

' ****** Main Demo Program ******

Xqt conveyor ' Start up the task for conveyor

Print "Press ENTER to run demo cycle"

Print "Press CTRL+C to quit"

Input dumy

Call demo ' Execute the demo function

Loop ' Return to start of main loop

158 EPSON RC+ 5.0 (Ver.5.4) User's Guide Rev.4

1 2 ... 171 172 173 174 175 176 177 178 179 180 181 ... 311 312

Sem comentários

Epson RC170 Guia do Utilizador Página 176