Fc_record_current_time (fc byte = 0x18), Fc_open_file (fc byte = 0x19), Fc_close_file (fc byte = 0x1a) – Rockwell Automation 1766-Lxxxx MicroLogix 1400 Programmable Controllers User Manual User Manual
Page 270: Fc_delete_file (fc byte = 0x1b), Fc_get_file_info (fc byte = 0x1c), Fc_authenticate_file (fc byte = 0x1d), Fc_abort_file (fc byte = 0x1e)

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Rockwell Automation Publication 1766-UM001H-EN-P - May 2014
Appendix F MicroLogix 1400 Distributed Network Protocol (DNP3)
FC_RECORD_CURRENT_TIME (FC Byte = 0x18)
24 - Record Current Time, used for LAN Procedure
This function code is used in the procedure for time synchronizing MicroLogix
1400 controllers that communicate over a LAN.
This applies only to MicroLogix 1400 Series B controllers.
FC_OPEN_FILE (FC Byte = 0x19)
25 - Open File
This function code is used to make a file available for reading or writing.
FC_CLOSE_FILE (FC Byte = 0x1A)
26 - Close File
After the file reading or writing operation, this function code used to unlock the
file.
FC_DELETE_FILE (FC Byte = 0x1B)
27 - Delete File
A DNP3 master uses this function code to delete a file.
FC_GET_FILE_INFO (FC Byte = 0x1C)
28 - Get File Information
This function code is for the master to retrieve information about a file in the
MicroLogix 1400.
This applies only to MicroLogix 1400 Series B controllers.
FC_AUTHENTICATE_FILE (FC Byte = 0x1D)
29 - Authenticate File
This function code is used to obtain an authentication key that is needed to open
or delete a file.
FC_ABORT_FILE (FC Byte = 0x1E)
30 - Abort File
This function code is used to immediately request termination of the current
read/write operation and close the file, without saving.