Appendix A. Performance Data
GFK-2222AD
April 2018
263
A-2.3
RX3i & RSTi-EP Instruction Times
The following tables are intended to provide guidance for expected instruction execution times when
using Ladder Diagram (LD) and C Language. For simplicity, the instructions are grouped as follows:
•
Boolean Operation: this includes coil and contact operation (LD only).
•
Word Operation: applies to MOVE instruction for all basic types.
•
Fixed-point math covers all math operations which are not floating point (INT, UINT, DINT types).
•
Floating-point math covers all math operations which are not fixed point (REAL and LREAL types).
Execution Times for LD Instructions
Type of Operation
CPE100/CPE115 CPE310/CPE305/CPE302 CPU320 CPE330
CPE400
Boolean Operation
127ns
87ns
46ns
46ns
46ns
Word Operation
1276ns
722ns
363ns
275ns
363ns
Fixed Point Math
1323ns
778ns
413ns
405ns
413ns
Floating Point Math
1328ns
771ns
420ns
410ns
420ns
Execution Times for C Instructions (Raw processor power)
Type of Operation
CPE100/CPE115 CPE310/CPE305/CPE302 CPU320 CPE330
CPE400
Boolean Operation
N/A
N/A
N/A
N/A
N/A
Word Operation
N/A
2ns
3ns
2ns
3ns
Fixed Point Math
N/A
20ns
3ns
3ns
3ns
Floating Point Math
N/A
24ns
9ns
6ns
7ns