
Appendix B: CRC-16 Calculation
30 Modbus® RTU Serial Communications User Manual 02/13
A.2.2 DR4300, DR4500 Chart Record Map
Address
(hex)
Register
(decimal)
Parameter Name Access Notes
0800 42049 Chart Speed (Hours/rev) R Floating Point in Engineering Units.
Note 1
0802 42051 # Chart Divisions R Floating Point in Engineering Units.
0804 42053 Chart Status R Floating Point
0.0 = hold; 1.0 = running.
0806 42055 Pen 1 R Floating Point
0.0 = disabled; 1.0 = enabled
0808 42057 Pen 1 High Value R Floating Point in Engineering Units.
Note 1
080A 42059 Pen 1 Low Value R Floating Point in Engineering Units.
Note 1
080C 42061 Pen 2 R Floating Point
0.0 = disabled; 1.0 = enabled
080E 42063 Pen 2 High Value R Floating Point in Engineering Units.
0810 42065 Pen 2 Low Value R Floating Point in Engineering Units.
0812 42067 Pen 3 R Floating Point
0.0 = disabled; 1.0 = enabled
0814 42069 Pen 3 High Value R Floating Point in Engineering Units.
0816 42071 Pen 3 Low Value R Floating Point in Engineering Units.
0818 42073 Pen 4 R Floating Point
0.0 = disabled; 1.0 = enabled
081A 42075 Pen 4 High Value R Floating Point in Engineering Units.
081C 42077 Pen 4 Low Value R Floating Point in Engineering Units.
NOTE 1: The DR4300 only supports the noted registers. All registers are supported by the DR4500.
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