Remote Processing BASIC 52 - Manual (Page 75)

RPBASIC-52 PROGRAMMING GUIDE
2-56
LINE (Statemen t)
Syntax: LINE line,data
Where: line = 0 to 8 or 100 t o 123 (L ine ran ges m ay var y. Che ck you r hardw are m anua l.)
data = 0 , 1 , O N , o r O FF . Se e te x t b e lo w .
Function: Turns a extern al opto mod ule or lines L0-L 8 on or off.
Mode: Comm and, Run
Use: LIN E 0,1
Cards: Basi c state men t availa ble for a ll cards . line ranges are card dependen t. See hardwa re manua l.
D E S C R IP T I ON
LINE is u sed to control an e xternal output opto module o r on card lines 0-8. O n board opto po sitions are
numbered 0-3. Off card opto racks using the digital I/O port are numbered 100 to 123. 100 is simply added
to the opto position to identify the external rack. For example,
LIN E 105 ,0
turns external opto ra ck position num ber 5 off.
data is ON, OFF, 0, or 1. ON is equivalent to 1 while OFF is 0. A '0' value turns off a module while a '1'
turns it on. These values are in contrast to the LINE# statement, which has the opposite meaning. For lines
0-7, "O N" se ts a line to a 1 w hile "O FF" s ets it to 0 .
LIN E 8,0 tu rns off th e high curren t port. L INE 8,1 turn s it on.
Using ON or OFF instead of numbers or variables speeds up this statement by 20%.
LIN E and LINE # ma y be us ed inte rchan geab ly in a p rogram .
RELATED
L I N E , L I N E #, L IN E B ( fu n c ti o n) , L I N E #, L IN E B ( st a te m e n t) , C O N F I G L IN E
E R R O R
B A D A R G U M E N T When line is out of range
EXAMPLE
The following example shows how different data is returned.
10 LINE 118,OFF Turns off external opto module 18.
20 LINE #118,0 Sets digital I/O connector line 18 to 0.
30 PRINT LINE(118),LINE#(118)
run
1 0
The function LINE(118) returns a 1 because that is the necessary condition to turn off a module. Also notice
that LINE(118) returns the status at opto port position 18 while LINE#(118) returns the condition at the
digital I/O port connector pin 18.
Use the CONFIG LINE statement to configure lines as inputs and outputs. Refer to the Digital I/O lines
section in the manual and CONFIG LINE statement for more information.