Shibaura CA20-M10, Operating Manual, Page: 211 / 384

11
– 21

For the values of the data selection signal and data selection
check signal, refer to section 12.3.3.2.

The data selection auxiliary register may not be used depending on a selected monitor.
Control unit
CA20-M10-CC CC-Link master station
CC-Link scan
Data selection input signal

RY(n+6)C

RY(n+6)F
Data selection check signal

RX(n+6)C

RX(n+6)F
Monitor data

RWrn

RWr(n+F)
Data send buffer

Monitor data (constantly updated)

Data selection check output signal
set

Data selection input signal & Data
selection auxiliary register check
Data selection auxiliary register
 ’ RWwn

11.3.3 Monitor mode
In Monitor mode, the data selected by data selection input [RY(n+6)C to RY(n+6)F] is constantly
updated for realizing high-speed updating cycles.

11.3.3.1 Data receiving method
(1)
Data flow and timing

Set the data selection signal and data selection auxiliary register.

The data selection signal is transferred to CA20-M00/M01 by the CC-Link scan.

The data selected by the data selection signal and data selection auxiliary register is
set to the data send buffer. The data send buffer is updated at 1-ms cycles.

Set the data selection check signal. Set the value of the data selection check signal
to the same value as the data selection signal.

The data selection check signal that was set in step

is transferred to the remote
input (RX) of the CC-Link master station by the CC-Link scan.

The data that was set in step

is transferred to the remote register (RWr) of the
CC-Link master station by the CC-Link scan.
Signal name Timing
RWrn

RWr(n+F)
Monitor data (constantly updated)
Previous data
Monitor data
Device

RY(n+6)C

RY(n+6)F
RX(n+6)C

RX(n+6)F
A Data selection input signal
Data selection check
output signal


A B
B
 ’
RWwn
A’ Data selection auxiliary
register B’