5
8. COMMUNICATION.......................................................86
8.1 General Description .............................................................. 86
8.1.1 General Description of Functions ................................... 86
8.1.2 Transmission Specifications............................................ 86
8.2 Original Protocol ………………………………………………86
8.2.1 Data Structure.................................................................. 86
8.2.2 Opening/Closing the Link................................................ 87
1) Open Command............................................................... 87
2) Close Command............................................................... 87
8.2.3 Outputting the Process Variable ..................................... 88
1) Specifying the Process Variable Output .......................... 88
2) Updating the Data............................................................. 88
3) Specifying the Process Variable Output Order
(At BINARY Mode Output).............................................. 88
4) Outputting the Data .......................................................... 88
5) Process Variable Transmission Format (ASCII).............. 89
6) Process Variable Transmission Format (BINARY) ......... 90
8.2.4 Outputting the Unit and Decimal Point Position Data .... 91
1) Specifying the Unit and Decimal Point Position
Data Output ..................................................................... 91
2) Updating the Data............................................................. 91
3) Outputting the Data .......................................................... 91
4) Data Format...................................................................... 91
8.2.5 Outputting the Status....................................................... 92
1) Status Output Command.................................................. 92
2) Status Output .................................................................... 92
8.2.6 Data Reception Example ................................................ 93
8.3 Modbus RTU Protocol……………………………………….. 94
8.3.1 Data Construction…………………………………….......94
8.3.2 Function Codes………………………………………….. 94
8.3.3 Error Response………………………………………….. 94
8.3.4 Reading from the Input Register Area……………......... 95
8.3.5 Reading from or Writing to the Holding Register Area... 98
9. MAINTENANCE ...........................................................99
9.1 Inspection .............................................................................. 99
9.2 Cleaning................................................................................. 99
9.3 Replacing Consumables..................................................... 100
9.4 Adjusting Dot Printing Position (Point Calibration)............. 100
9.5 Calibration (Data Calibration).............................................. 100
(1) Calibration of Voltage .................................................... 101
(2) Calibration of RTD (Resistance temperature detector) 101
(3) Calibration of Reference Junction Compensation........ 102
10. TROUBLESHOOTING ............................................ 103
10.1 Troubleshooting ................................................................ 103
10.1.1 Problems ..................................................................... 103
10.1.2 When the Recorder Dose not Work at All.................. 103
10.1.3 When There is a Large Error...................................... 104
10.1.4 When the Trend Recording is Deflected.................... 104
10.1.5 When Nothing is Recorded ........................................ 105
10.1.6 When Printing is Faint................................................. 105
10.1.7 When the Chart Paper is not Fed at All...................... 106
10.1.8 When the Chart Paper is not Fed Properly................ 106
10.2 Self-Diagnosis Function (ERROR) .................................. 107
10.2.1 Self-Diagnosis Items................................................... 107
10.2.2 Error Display................................................................ 108
11. SPECIFICATIONS ................................................... 109
11.1 Common Specifications .................................................... 109
11.1.1 Input Signal.................................................................. 109
11.1.2 Performance and Characteristics ............................... 109
11.1.3 Structure........................................................................110
11.1.4 Power Source...............................................................110
11.1.5 Normal Operating Conditions ......................................110
11.1.6 Alarm Output (Optional: LH6) ......................................111
11.1.7 Low voltage Directive and EMC Directive...................111
11.1.8 DI Function (Option: RE6)............................................111
11.1.9 Paper-empty Detection Function (Option: FL6)..........111
11.2 Standard Specifications......................................................112
11.2.1 Measurement Range ...................................................112
11.2.2 Accuracy at the Computation.......................................115
(1) Scaling ............................................................................115
(2) Square Root Computation .............................................115
(3) Decade ...........................................................................116
(4) Difference, Sum, and Average.......................................116
11.2.3 Individual Specifications...............................................116
11.2.4 Standard Functions ......................................................117
11.3 Standard Setting Functions................................................118
11.3.1 Standard Setting Functions..........................................118
11.4 Optional Functions .............................................................118
11.4.1 Remote Function of DI.................................................118
11.4.2 Alarm Output Function .................................................118
11.4.3 Communication Function.............................................118
