Rockwell Automation 6008-SI IBM PC I/O SCNNR 6008-SI - Manual (Page 73)

Chapter 7
Scanner Management
7-6
Set Operating Mode
To change the scanner’s operating mode, you must set the first byte of the
packet’s qmr_data field to one of the three values CM_RUN, CM_TEST,
CM_PROGRAM. Then call mr_wait with C_SETMODE as its first
argument.
Calling sequence:
packet.qmr_data[0] =
mode
;
status = mr_wait(C_SETMODE,
&packet
);
where
packet is a QMR type packet. Note that the argument to mr_wait is a
pointer to the packet.
mode is either CM_PROGRAM, CM_TEST, or CM_RUN.
Returned values:
status and packet.qmr_stat as explained under General Form, above.
global variable g_op_stat reflects the new scanner operating mode if the
request was successful.
Example: To change to run mode, execute the following code:
QMR mode_pkt;
. . .
mode_pkt.qmr_data[0] = CM_RUN;
if ( mr_wait(C_SETMODE, &mode_pkt) ) {
printf(“can’t execute set mode (%s)\n”,
xlat_conf(mode_pkt.qmr_stat));
abort( );
}
For the xlat_conf function, which translates a confirmation status to
English, see Confirmation Status Codes later in this chapter.