yeah, what he said. and then –
@twainspec – pg541 wrote:
Duplex Control
If an Application finds that CAP_DUPLEX exists and it indicates that duplex scanning is
supported, then the Application should negotiate CAP_DUPLEXENABLED. If
CAP_DUPLEXENABLED is set to FALSE, then DAT_FILESYSTEM capable Sources should not
report any TWFY_CAMERABOTTOM devices in the root directory. If the Source is set to a
TWFY_CAMERABOTTOM device at the time that CAP_DUPLEXENABLED is set to FALSE,
then it should automatically change itself to the corresponding TWFY_CAMERATOP device.
then read pgs 375 & 376 and then search the spec for ‘duplex’.
If you have more questions, just ask
.