Rockwell Automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User Manual - Manual (Page 163)

API Library of Routines
Appendix B
CC_PLC_BTW
B-32
Value Meaning
0 CC_SUCCESS = operation completed successfully
127 CC_E_NOATMPT = I/O operation not attempted; see status variable for reason
xxx ¬ PCCC_E_xxx = operation refused by the PLCĆ5 programmable controller
¬ See Table B.A for PCCC errors.
Returns
Status Symbolic Name Meaning
0 CC_SUCCESS Operation successful
124 CC_E_FAIL Expander not present
141 CC_E_CNVT DataĆconversion error (BASIC only)
157 CC_E_NOTCONNECT PLC is not connected or offline
165 CC_E_BAD_RACK Rack value out of range
166 CC_E_BAD_GROUP Group value out of range
167 CC_E_BAD_MODULE Module slot value out of range
168 CC_E_BAD_RETRY Retry value out of range
190 CC_E_SIZE Invalid size for operation
Description
Use the CC_PLC_BTW function to put block-transfer information to an
analog I/O module. This function may take a long period of real time
to complete.
C Example
unsigned char rack = 0;
unsigned char group = 5;
unsigned char module = 0;
unsigned char size = 1;
unsigned iostat;
unsigned short buff;
.
.
.
buff = 0x23;
status = CC_PLC_BTW (rack,group,module,size,1,&buff,&iostat);
if (!(status))printf (“data sent to module\n”);
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.
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