Rockwell Automation 1747-PCIS API Software - Open Controller - Manual (Page 155)

Publication 1747-UM002A-US-P - June 2000
Header File C-7
typedef struct tagFORCEDATA
BYTE SlotNum; /* slot number */
WORD WordOffset; /* offset to word to force */
BYTE IOType; /* selects force inputs or outputs */
WORD ForceMask; /* bits set to 1 are forced, 0 removes forces */
WORD ForceVal; /* selects force state of bits set to 1 in ForceMask */
} FORCEDATA;
/************************************************************
* Structure Name: DII_CFG
*
* Description:
*
* Passed to OC_ConfigureDII().
* Configures a discrete input interrupt for a module.
*
*************************************************************/
typedef struct tagDII_CFG
{
BYTE SlotNum; /* slot number */
BYTE IOIncludeMask; /* declare which Discrete Inputs can cause interrupts */
BYTE IOEdgeType; /* select required transition of each discrete input */
WORD PresetCount; /* set the number of transitions required to cause interrupt */
} DII_CFG;
/************************************************************
* Structure Name: STSFILE
*
* Description:
*
* Scanner status file.
*
*************************************************************/
typedef struct tagSTSFILE
{
WORD wWordNum[OCSTSFILEWSIZE];
} STSFILE;
/************************************************************
* Structure Name: MSGBUF
*
* Description:
*
* Returned by OC_PollScanner().
* MsgID identifies the message type. Type-specific
* data is contained in MsgData[].
*
*************************************************************/
#define OCMSGDATASIZE 4 /* number of bytes of message data */
typedef struct tagMSGBUF
{
BYTE MsgID; /* Message type */
BYTE MsgData[OCMSGDATASIZE]; /* Type-specific data */
} MSGBUF;
/************************************************************
* Structure Name: OCEXTERR
*