Table of contents 3.2.2 Eco Control 667E 16/16.................................................. 23 3.2.3 Eco Control 667E 32/32.................................................. 24 3.3 Mechanical design ................................................................. 24 3.3.1 Installation....................................................................... 25 3.3.2 Earthing .......................................................................... 26 3.4 Power supply.......................................................................... 27 3.4.1 System power supply........................................................
27 3.5 Digital inputs.......................................................................... 28 3.6 Digital outputs ........................................................................ 29 3.7 Serial interface COM1............................................................ 30 3.8 Light emitting diodes ............................................................... 30 3.9 Processor ............................................................................... 31 3.9.1 On-chip RAM................................................................... 31 3.10 Memory distribution................................................................
31 3.10.1 Operating system............................................................. 31 3.10.2 User program .................................................................. 31 3.10.3 Data memory................................................................... 33 3.10.4 NV-RAM: special features................................................. 33 3.10.5 On-chip RAM: special features .......................................... 34 4 Software....................................................................................... 35 4.1 Operative approach ...............................................................
35 4.1.1 PLC cycle......................................................................... 36 4.2 Operand ranges..................................................................... 43 4.2.1 Definitions ....................................................................... 44 4.2.2 Summary of operands ...................................................... 45 4.2.3 Set operand functions....................................................... 46 4.3 Description of commands ........................................................ 47 4.4 Types of operands ..................................................................
48 4.4.1 Addressing...................................................................... 49 4