Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller CUSTOMIZATION GUIDE - Manual (Page 49)

2.7 Summary, F-TRAN Instruction Set
LEGENDS: Symbols used in this discussion.
< >Used to enclose an expression
| Separates possible alternatives
Expressions — combination of operators and operands
Rule: Reverse Polish Notation
Legitimate expressions are defined as follows:
B expression = < B operand > | < B expression B expression B operator >|
< C operand $ > | < H operand $ $ > | < B literal >
C expression = < C operand > | < B expression % > | < H operand $ > |
< C expression C expression C operator > | < C literal >
H expression = < H operand > | < C expression % > |
< B expression % % >
L expression = < L operand > | < L expression L unary operator > |
< L expression L expression L binary operator > |
< C expression C expression : > |
< B expression B expression : > | < B expression Q > |
< H expression H expression : > | < B expression Z > |
< C expression Z > | < H expression Z >
A expression = < A operand > | < A literal >
F expression = < F operand > | < F literal >
NOTE : A binary operator requires two operands (such as an AND gate);
a unary operator requires only one operand (such as an
INVERT).
NOTE: The expression on the right side must be an operand (i.e., no
computed data).
MODULAR CONTROLLER CUSTOMIZATION GUIDE
2-42