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REPLACEMENT OF THE MELSECNET/10 (PLC TO PLC NETWORK)
4
(2) QnA/QnAS series
: Compatible, : Partial change required, ×: Incompatible
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Item
Description
Compat-
ibility
Precautions for replacement
QnA/QnAS series
MELSECNET/10 module
*1
Q series
MELSECNET/H module
*2
Cyclic transfer function
Communication
using B/W
Performs communications with all stations using link
relay and link register. (Communication using B/W)
Communication
using X/Y
Performs communications between I/O master station
and the other station in pairs. (Communication using X/Y)
Cyclic transmission
stop/restart
Stops cyclic transmission temporarily with GX Works2 or
GX Developer.
Inter-link data
transfer function
Transfers link data to multiple networks using parameters
all at once, when multiple networks are connected to one
programmable controller.
Direct access to the
link devices
Reads/writes directly from/to link device of the network
module on the sequence program.
Increase of sending
points by mounting
multiple modules of
the same network
No.
Allows multiple modules, of which the network No. are
the same, to be mounted to one programmable controller
and increases sending points per one station up to 8000
bytes.
Default of network
refresh parameter
Eliminates the refresh parameters setting by using
default values of refresh parameters.
Transient transmission function
Transient
transmission function
Communicates only when communication requests are
issued between each stations. (Communication using
dedicated link instruction and GX Works2/GX
Developer.)
Routing function
Performs transient transmission to other stations of which
network No. are different.
Group function
Performs transient transmission to all stations in the
group with an instruction.
Dedicated link
instruction
Performs communications with other station at desired
timing using dedicated link instruction.
Specification of
default network
Processes the requests that cannot specify network No.
of access path.
Clock setup for
stations on network
with peripheral
device
Performs clock setup to CPU modules connected to the
network with GX Works2 or GX Developer.
Control station shift
function
Enables to continue data link by switching normal station
to sub-control station, even if control station is in failure.
Multiplex transmission
function
Performs high-speed communication using duplex
transmission channel (forward loop/reverse loop).
Reserved station function
Treats the stations, which are to be connected in the
future, as reserved stations.
By specifying the stations, which are not connected, as
reserved stations, communication error does not occur.
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