Appendix
MultiExact Gas Analyser
A3.12 System set-up mapping
System data will be available with read-write access in blocks of holding registers.
This data can be read with function code 03 and written with function codes 06
and 16.
Register
Name
Comments
Clock
1
Year
0 – 99
2
Month
1 – 12
3
Date
1 – 31
4
Hour
0 – 23
5
Minute
0 – 59
6
Second
0 – 59
Calibration set up
7
Linked
0 = no, 1 = yes.
Switch input
8
Switch input function
0 = disabled, 1 = remote cal, 2 = auto val.
A3.13 Transducer set-up mapping
Each transducer will provide read-write access to various set-up data in blocks of
holding registers that can be read with function code 03 and written with function
codes 06 and 16.
Each register provides 2 bytes of data so it takes 2 registers each to store a 4 byte
floating point measurement value.
A block of 100 registers is allocated for each transducer to provide the means of
supplying the transducer related set-up data as follows:
Register
Name
Comments
101 – 200
Transducer 1
Transducer related data.
201 – 300
Transducer 2
112
05410001A / Revision 6
