Rockwell Automation 1785-Vx0B, D17856.5.9 PLC-5 VME VMEbus Programmable Controllers User Manual - Manual (Page 201)

Sample API Modules
Appendix B
B-43
/* Let’s retrieve the reply packet. */
status->epcStatus=EpcFromVmeAm((BM_MBO|A24SD),
BM_W8,
vmeReplyPacketAddr,
(char far *) pcccReplyPacket,
pcccReplyPacketSize);
if (status->epcStatus != EPC_SUCCESS)
{
/* Signal that we have an EPC error. */
status->plc540vStatus =
kPLC540V_GET_REPLYBLK_FROM_VME_FAILED;
status->statusCategory = kEPC_STATUS;
}
}
}
else
{
/* Signal that we have an EPC error. */
status->plc540vStatus = kPLC540V_COPY_CMDBLK_TO_VME_FAILED;
status->statusCategory = kEPC_STATUS;
}
}
else
{
/* Signal that we have an EPC error copying the PCCC packet to VME.*/
status->plc540vStatus = kPLC540V_COPY_PCCC_PACKET_TO_VME_FAILED;
status->statusCategory = kEPC_STATUS;
}
}
#ifndef P40VWBP_H
#define P40VWBP_H 1
///////////////////////////////////////////////////////////////////////////////
// Definitions for the PCCC WRITE BYTES PHYSICAL COMMAND AND REPLY PACKETS //
///////////////////////////////////////////////////////////////////////////////
#include ”p40vspcc.h”
#pragma pack(1)
/***************************************************************************/
/************************ INTEL VERSION OF DEFINITIONS *********************/
/***************************************************************************/
// The maximum number of bytes which can be written in one operation.
#define kPLC540V_PCCC_MAX_WBP_DATA 238
typedef UBYTE PLC540V_PCCC_WBP_DATA_TYPE[kPLC540V_PCCC_MAX_WBP_DATA];
/* The PCCC Write Bytes Physical command packet structure. */
typedef struct
{
UBYTE reserved[4];
UBYTE cmd;
UBYTE sts;
UWORD tns;
UBYTE fnc;
ULONG addr;
PLC540V_PCCC_WBP_DATA_TYPE data;
} PLC540V_PCCC_WBP_CMD_TYPE;
#define kPLC540V_PCCC_WBP_CMD_SIZE (sizeof(PLC540V_PCCC_WBP_CMD_TYPE))
P40VWBP.H