PACSystems™ RX3i and RSTi-EP CPU Reference Manual Appendix A
GFK-2222AK October 2019
Serial I/O, SNP & RTU Protocols 197
A-2.2 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).
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