5 - 8
MELSEC-
5 PRELIMINARY INFORMATION
(8) Create the following program and write Y100 to Y11F into RYn0 to RY(n+1)F.
Module error (master station)
Module ready (master station)
Local station data link state (master station)
Changeover to bank 0
Write 'Y100 to Y11F' t
'RYn0 to RY(n+1)F'
POINT
When using QCPU (Q mode) or QnACPU, setting automatic refresh parameters
refreshes the contents of the remote input (RX) and remote output (RY)
automatically. Thus, the above program is not required.
(a) Using the dedicated commands (RIRD, RIWT, RISEND,
RIRCV)
When the dedicated commands (RIRD, RIWT, RISEND, RIRCV) are used,
RY(n+1)E, RY(n+1)F are used with the dedicated commands, so the user
must make sure that this signal information is not rewritten.
When the QCPU(Q mode) is used, such provisions need not be mode.
1) When using ACPU
Changeover to bank 0
Read RY new information
Retrieve RY(n+1)E,
RY(n+1)F state
Write to RYn0
to RY(n+1)F
2) To set automatic refresh with QnACPU
Read RY new information
Retrieve RY(n+1)E,
RY(n+1)F state
