Rockwell Automation 1771-DB BASIC MODULE - Manual (Page 314)

Chapter
Call Routines 69–127 13
13 -56
Example
>1 REM EXAMPLE PROGRAM
>10 REM ENABLE PLC/SLC UNSOLICITED WRITE INTERRUPT
>15 PUSH 64: CALL 4: REM SET BLOCK TRANSFER WRITE LENGTH
>16 PUSH 64: CALL 5: REM SET BLOCK TRANSFER READ LENGTH
>20 PUSH 1 : REM ENABLE THE CALL
>30 PUSH 0 : REM BTR BUFFER
>40 PUSH 1 : REM ALWAYS 1
>50 PUSH 0 : REM STRING NUMBER – NOT USED
>60 PUSH 20 : REM MAX ALLOWED WORD LENGTH OF DATA PACKET
>70 CALL 118
>80 POP S
>90 IF (S<>0) THEN PRINT “UNSUCCESSFUL CALL 118 SETUP”
Sample Ladder Logic
BTR
BLOCK TRANSFER READ
Rack
Group
Module
00
1
0
N7:0
N10:10
64
Control Block
Data file
Length
Rung 2:0
17
I:001
Rung 2:1
[END OF FILE]
(EN)
(DN)
(ER)
N Continuous
N7:0
15
Use CALL 119 to reset the PRT2 port to these default settings:
8 bits/character
1 stop bit
no
parity
DCD off
XON-XOFF off
Input and Output Arguments
This routine has no input and no output arguments.
Syntax
CALL 119
Example
>1 REM EXAMPLE PROGRAM
>10 CALL 119
>20 END
CALL 119: Reset the PRT2
Port to Default Settings