X8 Instruction Set Reference Manual
Using High-Speed Outputs
6
-
17
PTO.0.ErrorCode
PTO PTO.0.ErrorCode shows the error code.
PWM - Pulse Width
Modulation
The X8 Series PLC High-Speed Output (PTO and PWM) function supports
up to 100KHz, and is applied to simple motion contr
o
l and high-speed pulse
output.
The PWM function can only be used with the controller's embedded I/O. It
cannot be used with expansion I/O modules.
The PWM instruction should only be used with X8 Series PLC. Relay outputs
are not capable of performing very high-speed operations.
Instruction Type: output
PWM Function
The PWM function allows a field device to be controlled by a PWM wave
form. The PWM profile has two primary components:
• Frequency to be generated
• Duty Cycle interval
PWM Data Table
The PWM instruction, along with the HSC and PTO functions, are different
than all other controller instructions. Their operation is performed by custom
circuitry that runs in parallel with the main system processor. This is necessary
because of the high performance requirements of these instructions.
A typical operating sequence of a PWM instruction is as follows:
1.
The rung that a PWM instruction is on is solved true (the PWM is
started).
2.
PWM function execution (Frequency is generated)
Address
Data Format
HSC Mode
Function
User Program
Access
PTO.0.Error Code
Word (INT)
-3 ~ 7
Status
Read Only
PWM
EN
ENO
PWM Number
0 -
Summary of Contents for X8 Series
Page 1: ...Catalog Number s X8 M14DDT X8 M16DDR X8 M32DDT X8 Instruction Manual Reference Manual ...
Page 16: ......
Page 64: ...X8 Instruction Set Reference Manual 2 12 X8 Series PLC Memory and Data Table ...
Page 166: ...X8 Instruction Set Reference Manual 7 8 Relay Type Bit Instructions ...
Page 180: ...X8 Instruction Set Reference Manual 8 14 Timer and Counter Instructions ...
Page 205: ...X8 Instruction Set Reference Manual Math Instructions 10 17 ...
Page 206: ...X8 Instruction Set Reference Manual 10 18 Math Instructions ...
Page 212: ...X8 Instruction Set Reference Manual 11 6 Converion Instructions ...
Page 218: ...X8 Instruction Set Reference Manual 12 6 Logical Instructions ...
Page 236: ...X8 Instruction Set Reference Manual 15 8 Shift and FIFO LIFO Instructions ...
Page 242: ...X8 Instruction Set Reference Manual 16 6 Sequencing Instructions ...
Page 252: ...X8 Instruction Set Reference Manual 18 4 Input and Output Instructions ...
Page 280: ...X8 Instruction Set Reference Manual 20 12 PID Control ...
Page 296: ...X8 Instruction Set Reference Manual 21 16 ASCII Instructions ...
Page 308: ...X8 Instruction Set Reference Manual 22 12 Communications Instructions ...
Page 312: ...Appendix A 4 System Error Code ...
Page 313: ...Appendix B MSG Instruction Error Code MSG Instruction Error Code ...
Page 322: ...Appendix B 10 MSG Instruction Error Code ...
Page 325: ...ASCII Character Set Appendix C 3 ...
Page 326: ...Publication number X8 RM001A EN September 2012 ...
Page 327: ...Copyright 2012 RS Automation Co Ltd All rights reserved ...