Appendix f – slave instrument mapping, Atmosphere instruments – Super Systems PC Configurator 2 User Manual
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Super Systems Inc.
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Configurator Manual #4562 Rev D
Appendix F – Slave Instrument Mapping
The following tables can be used as a reference for retrieving information such as the PV,
setpoint, etc from a slave instrument. The slave instrument information will have a base offset
based on the instrument number that is assigned. The base offset can be determined using the
following formula:
Base Offset = (Instrument Number * 100) + 900
For example, the base offset for instrument 1 would be 1000
→ (1 * 100) + 900 – and the base
offset for instrument 7 would be 1600
→ (7 * 100) +900. The slave instruments will be split
into three sections: Atmosphere Instruments, Temperature Instruments, and Events
Instruments. The layout for each instrument will be the same:
• Controller – The type of controller the slave instrument is – i.e. AC20, Series 9200, etc.
• Source Location – The register
in the controller
where the specified value is located.
Note: These will be added on to the base offset of the instrument (see above section)
.
For example, the source location for %C actual for an AC20 is 11. For instrument 1, the
register to find the %C actual would be 1011
→ the base offset for instrument 1 is
1000, plus the source location of 11.
• Write Register – The register
within the slave instrument
where the value will be written.
• Read Scale – Any value read in from an instrument will be divided by this number for
display purposes only.
• Write Scale – Any value written to an instrument will be multiplied by this number for
display purposes only.
• Description – This will be a brief description of what the value is, i.e. %C actual,
Setpoint, etc.
Atmosphere Instruments
Controller Source
Location
Write
Register
Read
Scale
Write
Scale
Description
AC20
11
123
1
1
%C Actual
(Modbus Mode)
29
138
1
1
%C Setpoint
13
125
1
1
Probe
Temperature
10
122
1
1
Probe
Millivolts
20
130
10
10
%C
Percent
Output
34
142
1
1
CO Factor or Equivalent
35
143
1
1
H Factor or Equivalent
12
124
1
1
Dew
Point
36
144
10
10
O2