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3. SPECIFICATIONS
3.5 110 Refresh
IMELSEC;4
110 refresh indicates 110 data transfer between the master station
(master module buffer memory) and remote 110 stations.
Input data is transferred from the remote 110 stations to the buffer
memory.
Output data is written from the PC CPU to the buffer memory and
output to the remote 110 stations.
110 refresh processing is performed in accordance with the remote
110 unit type.
(1) Batch refresh type remote 110 unit
Remote 110 station data is transferred by one 110 refresh.
(2) Partial refresh type remote 110 unit
Remote 110 station data is transferred by several 110 refreshes.
Specify the number of 110 refresh times (number of digits) in
the master module buffer memory by using the sequence
program. For full information, see Section
5.4.
110 refresh execution changes in accordance with the PC CPU
operating status and MINI link communication status. See Sec-
tions
3.5.1
and
3.5.2.
•
I
3.5.1 Relation between PC CPU operating status and 1/0 refresh
110 refresh ofthe MINI link is performed when the master module
is in online mode (mode setting switch = 0 to 2
see Section
4.3.2)
and
Y18
(MINI link communication start) is on.
110 refresh is stopped by switching off Y18.
(1) Input remote 110 station
(a) During 110 refresh, remote 110 station input data is
continually stored to the receive data area (buffer memory
addresses
110
to
141, 600
to
855).
(b) When I/O refresh is stopped, the receive data at the time of
110 refresh stop is retained.
(2) Output remote 110 station
(a) During 110 refresh, transmission data (buffer memory
addresses
10
to
41, 300
to
555)
is output to the output
remote 110 stations.
(b) When 110 refresh is stopped, the output unit states depend
on their E.C. MODE switch positions.
For full information on the E.C. MODE switch, see the
MELSECNET-MINI Remote 110 User's Manual.
~efresh
During I/O Refresh
I/O Refresh Stop
e.c.
MODE Swil:d1
(Y18 ON)
(Y18 OFF)
ON
Output
remote
VO
units
All
outputs are
switched off.
are
switched onloff in accordance
Output states at the time of I/O
OFF
with the transmission data.
refresh stop is retained.
3-18
•
IB(NAl66164-A
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