Figure 19: Two Rate Inputs - Honeywell SLG 700 Option Manual

The usage is as follows:
Rate
It is used when the variable connected to the input is a rate, that is Kg/s, w, Gal/hour, and so on. This
input can come from the rate output OUT of an Analog Input block.
Accum
It is used when the input comes from the OUT_ACCUM output of a Pulse Input block, which
represents a continuous accumulation of pulse counts from a transducer, or from the output of another
Integrator block. The bits corresponding to IN_1 and IN_2 can be set to False for Rate, or can be set
to True for Accum.
If the input option is Rate
Each input needs a parameter to define the rate time unit: IN_1, IN_2. The time unit can be selected in
seconds/minutes/hours/days. The second analog input must be converted into the same unit as that of
the first input. IN_2 must be converted into the same units of IN_1. This can be done by using the
parameter UNIT_CONV. For example, if IN_1 is in seconds and if IN_2 is in minutes, IN_2 must be
converted to seconds before starting the integration. In this case, the value of UNIT_CONV is .0166
(1/60).
To find the mass, volume, or energy increment per block execution, each rate must be multiplied by
the block execution time. This increment must be added or subtracted in a register.
The following diagram is an example of the use of two Rate inputs:

Figure 19: Two Rate Inputs

Rev.5 FOUNDATION Fieldbus Option User's Manual Page 91