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HXPRM10mnCT002E
8.COMMUNICATIONS ............................................................ 95
8.1 General Description ..................................................................... 95
8.1.1 General Description of Functions .......................................... 95
8.1.2 Transmission Specifications .................................................. 95
8.2
Original Protocol............................................................................ 96
8.2.1 Data Construction ............................................................... 96
8.2.2 Opening/Closing the Link ................................................... 96
8.2.3 Outputting the Process Variable Data ................................ 97
8.2.4 Outputting the Unit and Decimal Point Position Data ..... 100
8.2.5 Outputting the Status ........................................................ 101
8.2.6 Data Reception Example ................................................. 102
8.3
Modbus RTU Protocol ................................................................ 103
8.3.1 Data Construction ............................................................. 103
8.3.2 Function Codes ................................................................. 103
8.3.3 Error Response ................................................................. 103
8.3.4 Reading from the Input Register Area ............................. 104
8.3.5 Reading from or Writing to the Holding Register Area .... 107
9. MAINTENANCE ................................................................ 108
9.1
Inspection .................................................................................. 108
9.2
Cleaning .................................................................................... 108
9.3
Replacing Consumables .......................................................... 109
9.4
Adjusting the Pen Recording Position
(Point Calibration) ........................................................... 109
9.5
Calibration (Data Calibration) ................................................... 109
(1)
Calibration of Voltage ......................................................... 110
(2)
Calibration of Resistance Temperature Detector .............. 110
(3)
Calibration of Reference Junction Compensation ............ 111
10. TROUBLESHOOTING .................................................... 112
10.1
Troubleshooting ......................................................................112
10.1.1
Trouble Items ....................................................................112
10.1.2
When the Recorder Does
not Work at All ...............................................................112
10.1.3
When There is a Big Error ................................................113
10.1.4
When the Pen Recording Deflected ................................113
10.1.5
When Prints Nothing .........................................................114
10.1.6
When Printing is Faint .......................................................114
10.1.7
When the Chart Paper is not Fed at All ...........................115
10.1.8
When the Chart Paper is not Fed Properly .....................115
10.2
Self Diagnostics Function (ERROR) .....................................116
10.2.1
Self Diagnostic Items ........................................................116
10.2.2
Error Display ......................................................................117
11. SPECIFICATIONS ............................................................ 118
11.1
Common Specifications ..........................................................118
11.1.1
Input Signal ........................................................................118
11.1.2
Performance and Characteristics .....................................118
11.1.3
Structure ............................................................................119
11.1.4
Power Source ....................................................................119
11.1.5
Normal Operating Conditions ...........................................119
11.1.6
Alarm (Relay Output is Optional)..................................... 120
11.1.7
Safety Standard and EMI Standard ................................ 120
11.1.8
DI Function (Option) ......................................................... 120
11.1.9
Paper-empty Detecting Function (Option) ...................... 120
11.2
Standard Setting Specifications ............................................. 121
11.2.1
Measurement Range ....................................................... 121
11.2.2
The Accuracy at the Computation ................................... 124
(1) Scaling .................................................................................. 124
(2) Square root computation ..................................................... 124
(3)
Decade ............................................................................... 125
(4)
Difference, Sum, and Average .......................................... 125
11.2.3
Individual Specifications ................................................... 126
11.2.4
Standard Functions .......................................................... 127
11.3
Standard Setting Functions ................................................... 128
11.3.1
Standard Setting Functions ............................................. 128
11.4
Optional Functions
............................................................ 128
11.4.1
Remote Function of DI ..................................................... 128
11.4.2
Alarm Board ..................................................................... 128
11.4.3
Communication Unit ........................................................ 128