ProSoft Technology MVI56-BAS - Manual (Page 189)

MVI56-BAS ♦ ControlLogix Platform BASIC CALLs Syntax
BASIC Module (DB/BAS Compatible) User Manual
ProSoft Technology, Inc. Page 189 of 234
December 13, 2011
If using an internal string the BASIC program must monitor the second character
which contains the transaction number which is incremented at every successful
transaction (from 0 to 255)
C = word offset in destination file. The offset for an internal string is always 2,
because each string has the following structure:
If using the input image file as the destination file the offset should be a minimum
of 2, because the first 2 words are reserved.
D = string number. This parameter is only used if the destination file selected is
an internal string
E = maximum word length. Any packets received which contains more than this
parameter is rejected.
F = CALL 118 status. It can assume one of the following values:
0 = successful
1 = disabled
2 = invalid parameter
3 = DF1 port is not enabled
4 = selected DF1 port is not enabled
5 = string is not dimensioned
Example:
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90 PUSH 1,1,0,0,20: CALL 118: POP STATUS
100 IF(STATUS<>0) THEN PRINT "Unsuccessful CALL 118 Setup"
110 REM CALL 118 remains active as long as BASIC
120 REM continues to RUN.
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9.9.3 DF1 Background CALLs
CALL 118: Receive DF1 or DH-485 Unsolicited Write
Use CALL 118 to allow the MVI56-BAS to receive write command from remote
DF1 devices such as PLC-2, PLC-3, PLC-5 or from the DH-485 network. The
following WRITE commands are accepted:
PLC (word range writes)
PLC (typed writes)
PLC (unprotected writes)
SLC 5/02 (unprotected writes)