Epson TM-H6000III Development Manual page 22

Returned value One of the following is returned and stored in the ResultCode
property.
Value
OPOS_SUCCESS
OPOS_E_CLOSED
OPOS_E_NOTCLAIMED
OPOS_E_DISABLED
OPOS_E_ILLEGAL
Other
Requirement Open, Claim & Enable
8) CHK_DI_ROTATE_IMAGE
Parameter
Command
pData
pString
Explanation Specifies how an image is rotated when saved.
When CHK_DI_ROTATE_OFF is set in the second parameter,
the scanned image is saved without any rotation.
When CHK_DI_ROTATE_ON is set in the second parameter,
the scanned image is rotated 90 degrees and then saved.
You must set it up before executing the EndInsertion method.
The default value is CHK_DI_ROTATE_ON.
APPLICATION DEVELOPMENT GUIDE
Meaning
DirectIO succeeded.
The device is closed.
The device is not claimed.
The device is disabled.
Specifies
function.
The parameter is illegal.
Refer to the ResultCode item.
Explanation
CHK_DI_ROTATE_IMAGE
CHK_DI_ROTATE_OFF
CHK_DI_ROTATE_ON
Not used. Null character string is entered.
19
CheckScanner
Version 3.00 Feb. 2019
command number without a