126 Rockwell Automation Publication 2080-UM002M-EN-E - April 2022
Chapter 6 Micro870 Controller Distributed Network Protocol
Diagnostics for Secure Authentication
Diagnostic information for Secure Authentication is shown in Connected
Components Workbench software. Click Diagnose to display the Diagnostic
page.
Function Codes These tables show the Application Layer Function codes implemented in the
controller.
21 ERROR_LINK_SEQUENCE_UNKNOWN Unknown confirming sequence number in received APDU
22 ERROR_LINK_OUT_OF_SEQUENCE Received APDU not in sequence with previous APDU
Transport layer errors
23 ERROR_TPRT_SEQUENCE_ERROR Sequence number error
Table 10 - Error Codes (Continued)
Value (DEC) Mnemonic Description
Table 11 - Function Codes for DNP3 in Micro870 Controllers
Message Type Function Code Name Micro870 Support Description
Confirmation 0 (0x00) CONFIRM Yes Controller parses/sends
Request 1 (0x01) READ Yes Controller parses
Request 2 (0x02) WRITE Yes Controller parses
Request 3 (0x03) SELECT Yes Controller parses
Request 4 (0x04) OPERATE Yes Controller parses
Request 5 (0x05) DIRECT_OPERATE Yes Controller parses
Request 6 (0x06) DIRECT_OPERATE_NR Yes Controller parses
Request 7 (0x07) IMMED_FREEZE Yes Controller parses
Request 8 (0x08) IMMED_FREEZE_NR Yes Controller parses
Request 9 (0x09) FREEZE_CLEAR Yes Controller parses
Request 10 (0x0A) FREEZE_CLEAR_NR Yes Controller parses
Request 11 (0x0B) FREEZE_AT_TIME No
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