ControlMaster CM30 and CM50
Universal process controllers,
1
/4 and
1
/2 DIN 7 Advanced Level
IM/CM/ED–EN Rev. B 49
7.6 Totalizer
Two 9-digit totalizers are provided. These can be configured independently to
totalize any analog or digital signal. Four modes of operation are provided.
Where possible, the count rate is calculated automatically according to source
units, totalizer units and engineering range.
Totalizer 1 (2)
Mode
Off Totalizer disabled.
Analog Totalization of any analog signal.
Digital Counting of low / high transitions of any digital signal.
Frequency Totalization of a frequency input on Analog input 1.
Pulse Totalization of a pulse input on Analog input 1.
Source The input to be totalized. The inputs available for selection are dependent on the
selected Mode. Not displayed for frequency and pulse inputs – see Appendix
A, page 79
for description of sources.
Count Direction
Up Totalizer value increases with time.
Down Totalizer value decreases with time.
Units (Totalizer) units are used along with the source's units and engineering range to calculate
the count rate automatically (where possible). Where the units or mode required do not
allow this, the count rate must be calculated manually –
see Section 7.6.1, page 51.
Count Rate In Analog mode, this represents the counts (in volume units) / second when the source is
at its engineering high value.
In Digital, Frequency and Pulse mode, this represents the number of totalizer (volume)
units / pulse.
Cutoff The lowest input value (in engineering units) at which the totalizer stops counting.
Stop Go Source The source required to stop and start the totalizer. Selection is made on the rising edge.
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