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example,tosettotwo-wireAutoControlmode,usethe

followingcode:

TRANSCEIVER_MODEl_TransceiverMode=RS485_MODE_2W_AUTO;

DWORDl_ByteCount;

DeviceIoControl(

PortHandle,

NISERIAL_SET_RS485_MODE,

(LPVOID)&l_TransceiverMode,

sizeof(l_TransceiverMode),

(LPVOID)NULL,

0,

(LPDWORD)&l_ByteCount,

NULL

);

4. ToretrievethecurrentRS-485transceivercontrolmode,

youcanuseNISERIAL_GET_RS485_MODEand

DeviceIoControlwiththefollowingcode:

TRANSCEIVER_MODEl_TransceiverMode;

DWORDl_ByteCount;

DeviceIoControl(

PortHandle,

NISERIAL_GET_RS485_MODE,

(LPVOID)NULL,

0,

(LPVOID)&l_TransceiverMode,

sizeof(l_TransceiverMode),

(LPDWORD)&l_ByteCount,

NULL

);

SettingtheRS-485TransceiverControlModeonENET

Hardware

TosetandretrievetheRS-485transceivercontrolmodeusingthe

National Instruments PCI-8430 User Manual

Questions and Answers: