Modbus Interface - KAM Simple Precision OWD User Manual

K A M O W D O P E R AT I O N C O N T I N U E D
3. Determine water percentage in sample using a KAM Karl Fischer Moisture Analyzer (recommended), or appropri-
ate method. Enter the determined sample water percentage into Hyperterminal prompt and hit ENTER.
4.
Type "S", then hit ENTER to save.
5. The KAM OWD is now calibrated.
® ®
This process can be repeated if the sample taken was a bad sample or the percent of water obtained from the
sample taken was not accurate.
HOW TO CHANGE THE HIGH/LOW (4-20 mA) RANGE
1. To enter or change the desired range for the OWD sensor, type "R" and hit ENTER. Prompts will
appear for the low and then the high ends of the range.
After entering both, type "S" to save. The range has been set and the Hyperterminal will return to the OWD
2.
Optimizer prompt menu.
SETTING UP A MODBUS INTERFACE
1. To set Modbus variables, type "M" and hit ENTER.
2. The prompt is for an ID for the slave device. This ID MUST BE UNIQUE from any other Modbus device
connected and a value between 1-255.
SYSTEM SETTINGS:
Modbus Baudrate: 9600.
Protocol is RTU Modbus.
See APPENDIX A for designated MODBUS Registers.
OWDMANUAL 1114
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KAM CONTROLS, INC.