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3 API functions

8 

BpbGetStates function

Parameter

[in] HANDLE hOpen Pointer to open context (handle) for identification

[out] PBPBSTATES pBpbStates Pointer to the states structure

Return values

S_OK Successful

E_HANDLE Incorrect (handle is invalid)

The states are returned in the BpbStates structure. In the following the organisation

of this structure is shown.

BpbState structure

Structure of

the status register:

UCHAR hRaw Raw value of the status information

Name

hName Status information of the controller and the groups

Structure of the name

Structure of the name:

Bit 0 .. bit 1 Controller Status of the controller

Bit 2 .. bit 3 Group1 Status of group 1

Bit 4 .. bit 5 Group2 Status of group 2

Bit 6 .. bit 7 Group3 Status of group 3

The byte is divided according to the status byte of the 3241 controller status register

and the I/O modules configured.

Return values of the controller

1 BPB_ CONTROLLER_STATE_INIT

2 BPB_ CONTROLLER_STATE_PREOP

3 BPB_ CONTROLLER_STATE_OP

Return values of the group

0 BPB_GROUP_STATE_UNAVAILABLE

1 BPB_GROUP_STATE_INIT

2 BPB_GROUP_STATE_RUNNING

3 BPB_GROUP_STATE_ERROR

Please note: Under XP the grouping for the programming interface is simplified, so

that there only is one group. During transmission this group contains all output data,

and during reception it contains all input data.

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Lenze 3241C Bedienungsanleitung Seite 10