Physical Layer ................................................................................................................................... 1 - 2

Description .......................................................................................................................................... 2 - 1

Data Link Layer................................................................................................................................. 2 - 1

Crc-16 Algorithm ............................................................................................................................ 2 - 2

Message Timing................................................................................................................................ 2 - 3

Supported Modbus Function Codes........................................................................................ 3 - 1

Function Code 01H/02H: Read Binary Status...................................................................... 3 - 2

Function Code 03H/04H: Read Actual Values / Setpoints ............................................. 3 - 2

Function Code 05H: Execute Operation................................................................................. 3 - 3

Function Code 06H: Store Single Setpoint............................................................................ 3 - 5

Function Code 10H: Store Multiple Setpoints ..................................................................... 3 - 5

Exception Responses ..................................................................................................................... 3 - 6

Clock Synchronization Of Multiple Relays ............................................................................ 3 - 7

Reading The Event Recorder ....................................................................................................... 4 - 1

Reading Trace Memory................................................................................................................. 4 - 2

Reading The Data Logger ............................................................................................................. 4 - 4

Accessing Data Via The User Map............................................................................................. 4 - 4

Memory Map Organization ......................................................................................................... 4 - 5

Memory Map...................................................................................................................................... 4 - 6

Data Formats ...................................................................................................................................4 - 46

Data Formats Notes .....................................................................................................................4 - 65

DNP 3.0 Device Profile Document ............................................................................................ 5 - 1

Dnp Implementation...................................................................................................................... 5 - 3

Binary Input / Binary Input Change ........................................................................................ 6 - 1

Binary / Control Relay Output.................................................................................................... 6 - 3

Analog Input / Analog Input Change ...................................................................................... 6 - 5

TOC - V