Mitsubishi MELSEC Q Series Programming Manual

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(3) When selecting refresh items
(a) Select refresh items by SD778, and set SM775 to ON.
The following table shows the refresh items that can be designated by turning SM775
ON/OFF and with SD778.
(b) Select refresh items using SD778.
Whether to execute each bit of SD778 or not can be designated as shown below:
[ QCPU]
To make only the send/receive processing with the remote I/O station faster,
designate MELSECNET/H refresh only.
(Set only b2 and b15 of SD778 to 1 (SD778: 8004
H).)
Refresh Item
QCPU LCPU
When SM775
is OFF
When SM775
is ON
When SM775
is OFF
When SM775
is ON
I/O refresh Not executed
Whether to be
executed or
not can be
selected.
Not executed Whether to be
executed or
not can be
selected.
CC-Link refresh
Executed
Executed
CC-Link IE controller network refresh - -
MELSECNET/H refresh - -
Auto refresh of intelligent function modules Executed
Whether to be
executed or
not can be
selected.
Auto refresh using QCPU standard area of
multiple CPU system
--
Reading input/output data of all modules other
than the multiple CPU system group
--
Auto refresh using the multiple CPU high speed
transmission area of multiple CPU system
--
Communication with display unit - -
Executed
Whether to be
executed or
not can be
selected.
Communication with peripheral device Executed
Whether to be
executed or
not can be
selected.
Bit of SD778 Executed Not Executed
b0 to b5
10
b15
01
b15
b0
b1b2
b3
b4b5b6b14 to
CC-Link IE controller network,
MELSECNET/H refresh
1/0 1/01/01/01/01/001/0
SD778
Auto refresh of
intelligent function module
Auto refresh using QCPU standard
area of multiple CPU system
Reading inputs/outputs from the outside
of the multiple CPU system group
Auto refresh using the multiple CPU high speed
transmission area of multiple CPU system
Communication with peripheral devices
I/O refresh
CC-Link refresh
Example

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English