YOKOGAWA DpharpEJX vigilantplant EJX Series - A2.3 Adder; A2.3.1 Status of Value after Addition; A2.3.2 Addition

IM 01C25T02-01E
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Appendix 2. Integrator (IT) Block
A2.3 Adder
When input processing is complete, two arguments that have been rate and accumulate converted will be passed to
the adder. The adder adds these two values according to the option.
A2.3.1 Status of Value after Addition
If one of the statuses of two arguments is "Bad" or if two of them are both "Bad," the status of the value after
addition becomes "Bad." In this case, the value of "Good" just before the status changed to "Bad" is used as the
addition value (see A2.1).
When the statuses of two arguments are both "Good," the status of the value after addition becomes "Good." In this
case, the status of the value after addition will be used for the status applied to integration.
A2.3.2 Addition
The following three options are available for addition:
• TOTAL: Adds two argument values as is.
• FORWARD: Adds two argument values, regarding a negative value as "0."
• REVERSE: Adds two argument values, regarding a positive value as "0."
You can choose these options using bit 2 and bit 3 of INTEG_OPTS as follows:
Bit 2 of INTEG_OPTS
(Flow Forward)
Bit 3 of INTEG_OPTS
(Flow Reverse)
Adder Options
HHTOTAL
LLTOTAL
HLFORWARD
LHREVERSE
TA 0202.EPS
The result of the adder is passed to the integrator. If only one of the inputs is connected, the value of a non-connected
input will be ignored.
When bit 7 of INTEG_OPTS (Add zero if bad) has been set, if the status of a value after addition is "Bad," the value-
after addition (increment) becomes "0."