6.2.4.4. Controllable Enumerated Status (ENC) .... 1246.2.4.5. Binary controlled step position information(BSC) ........................................................ 1256.2.4.6. Integer controlled step position information(ISC) ......................................................... 1256.2.5. Data objects for controllable analogue information ..... 1256.2.5.1. Analogue set point (APC) ......................... 1256.3. Attributes .................................................................................... 1266.3.1. Server attributes .......................................................... 1266.3.2. Modbus channel attributes .......................................... 1276.3.3. Modbus Device attributes ........................................... 1286.4. Status codes .............................................................................. 1296.4.1. Status codes ............................................................... 1297. Appendix 1 ......................................................................................... 1317.1. Interoperability list for IEC104 OPC Server ............................... 1318. Appendix 2 ......................................................................................... 1478.1. Device profile ............................................................................. 147Index ............................................................................................................ 1577COM600 series 5.01MRS758690Master Protocols (Ethernet) and Applications TechnicalReference Manual