Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual - Manual (Page 214)

API Library of Routines
Appendix B
DTL_WRITE_W
B-83
Returns
Status Symbolic Name Meaning
0 DTL_SUCCESS Operation successful
15 DTL_E_R_ONLY Data item defined as READ only
19 DTL_E_NOINIT DEFINE table not initialized
20 DTL_E_BADID Definition ID out of range
24 DTL_E_FAIL I/O completed with errors
32 DTL_E_NODEF No such data item defined
41 DTL_E_CNVT DataĆconversion error, I/O not attempted
157 CC_E_NOTCONNECT PLC is not connected or offline
Description
Use the DTL_WRITE_W function to write data to the PLC-5
programmable controller directly connected to the control coprocessor.
This function is synchronous. When this function is initiated, your
C application program stops until the function completes or fails.
C Example
unsigned status;
unsigned machine1;
unsigned short parts1;
unsigned iostat;
.
.
.
DTL_C_DEFINE (&machine1, “N30:0, 1, WORD, MODIFY”);
.
.
.
status = DTL_WRITE_W (machine1, &parts1, &iostat)
if (status == DTL_SUCCESS)
{
printf (“parts = %d\n”, parts1);
}
else
{
(printf (“error %d, %d on read of parts data\n”,
status,
iostat);
}
.
.
.