Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 5)

IM CX2000-S30E 3
1.2. Computation Function Expansion
Computation functions are expanded in measurement and control computation.
Measurement computation expansion
The followings can be used in measurement computation equation.
- Additional data: CI01- CI10, DI/DO/SW data, W01-W36
- Additional operand: CLOG.MAX(), CLOG.MIN(),CLOG.AVE(). CLOG.P-P(),
[eq1?eq2: eq3]
Up to 120 characters can be used in measurement computation equation.
Control computation expansion
Logic computation expansion
- 4 rules arithmetic (+, -, *, /) can be used in logic computation equation.
- Additional operator for logic computation
The .SELECT() can be used in logic computation.
.SELECT(e1.e2):
It checks whether the two data values, a loop number (e1) is running in pattern
number (e2), and computes according to the conditions.
The data that can be used in “.SELECT ()” is as follows.
e1: Loop number: 1 to 6, or control constant (W01 to W036)
e2: Pattern number: 1 to 30, constant (W01 to W36)
Note
- For the following case, logic computation results in an error.
For example: .SELECT (1, W1)
1. For the case the loop number “1” does not exist in the pattern number “W1”
2. For the case the loop number “1” is running in the other pattern number (not “W1”)
- In case that control constant is decimal point setting, number after the decimal point is cut
off. (Example: constant setting “1.5” Æ”1”)
- The equation after .SELECT () operator is invalid.