Appendix 4.9 I/O Control Mode - Mitsubishi Q2ACPU User Manual

APPENDICES
Appendix 4.9 I/O control mode
The I/O control mode for QnACPU is refresh mode (direct I/O is enabled depending on the
device).
• As the I/O control mode for AnACPU and AnUCPU is the refresh mode as with
• In the case of AnCPU, AnNCPU, and A3HCPU, I/O control mode is fixed or selected
AnCPU
AnNCPU
A3HCPU
AnACPU
AnUCPU
• Modifying programs that generate pulses from SET/RST instructions by using direct
QnACPU, there are no problems with the input timing of inputs (X) or the output timing
of outputs (Y).
to direct mode, and the input timing for inputs (X) and output timing for outputs (Y)
differs from that for the refresh mode.
The I/O control mode for each CPU module is shown below.
Model Name
Fixed as the direct mode
Direct mode or refresh mode ia selected with the switch on the module.
Direct mode or refresh mode is selected by parameter settings.
Fixed as the refresh mode
Fixed as the refresh mode
devices
Modify programs which, in the direct mode, output pulse output to the external using
SET/RST instructions to programs that use direct output devices for QnACPU.
I/O control Method
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