Honeywell 2MLF-RD4A User Manual page 11

Process alarm hysteresis setting (addresses 43-46) ......................................................... 101
Input variation alarm type (address 47) .............................................................................. 102
Input variation alarm upper/lower limit value (addresses 48-55) ....................................... 104
Detection cycle of input variation alarm (addresses 56-59) ............................................... 106
Setting error information (addresses 60-63) ...................................................................... 107
Input variation value/rate output (addresses 64-67) .......................................................... 108
Sensor disconnection information (addresses 68-71) ....................................................... 111
6. PROGRAMMING ........................................................................ 113
6.1 Read/write operation of operation parameters setting area ................... 113
Read data from the operation parameters setting area (GET, GETP instruction) .............. 113
Difference between GET instruction and GETP instruction ................................................ 113
Write data to the operation parameters setting area (PUT, PUTP instruction) ................... 114
Difference between PUT instruction and PUTP instruction ................................................ 114
6.2 Basic program ............................................................................................. 116
6.3 Application program ................................................................................... 119
Monitoring program of °C temperature-converted and scaled value ('assign fixed points to I/O
slot (64)' option used). ........................................................................................................ 119
Program with °F temperature-converted value and highest/lowest process alarm (I/O slot
fixed-points assigned: based on changeable type) ............................................................ 123
7. TROUBLESHOOTING ............................................................... 129
7.1 Introduction ................................................................................................. 129
7.2 Error codes .................................................................................................. 129
7.3 Troubleshooting procedures ..................................................................... 131
RUN LED flickering ............................................................................................................ 131
RUN LED OFF ................................................................................................................... 132
CPU cannot read temperature conversion value ................................................................ 133
RTD input value is not consistent with the detected value ................................................. 134
RTD module hardware error ............................................................................................... 135
RTD module status check through SoftMaster system monitoring ..................................... 135
Execution sequence ........................................................................................................... 135
Module information ............................................................................................................. 135
8. APPENDIX ................................................................................. 137
8.1 Appendix 1: Standard resistance values of Pt100/JPt100 sensors ....... 137
8.2 Appendix 2: Dimensions ............................................................................ 139
2MLF-RD4A ....................................................................................................................... 139
R200 Resistance Temperature Detector 2MLF-RD4A User's Guide
September 2010 Honeywell
Contents
Symbol Definitions
xi