Mitsubishi Electric MELSEC-A Series Manual page 185

5
REPLACEMENT OF THE MELSECNET/10 (REMOTE I/O NETWORK)
Item
Automatic return
function
Loopback function
Station detach
function
Diagnostic function
Blown fuse error and
input/output
verification error
check disabled
function
(2) Comparison with QnA/QnAS series
Item
Communicating with
I/O module
Communicating with
special function
module
Cyclic transmission
stop/restart
Direct access to the
link devices
Default of network
refresh parameter
Description
A/AnS series
MELSECNET/10 module MELSECNET/H module
Returns the station disconnected from data link to the
system when it goes to normal status and restarts data
link.
Keeps normal operation between operable stations by
disconnecting faulty area at error occurrence such as
cable break.
Keeps normal operation between operable stations
except faulty stations and stations switched off.
Checks line conditions of the network and setting
conditions of the module.
Sets the error check of the blown fuse error and the input/
output verification error.
Description
QnA/QnAS series
*1
MELSECNET/10 module MELSECNET/H module
Performs communications with the I/O module of the
remote I/O station using X/Y (LX/LY).
Performs communications with the special function
module of the remote I/O station using X/Y (LX/LY) and
B/W (LB/LW).
Stops cyclic transmission temporarily with GX Works2 or
GX Developer.
Reads/writes directly from/to link device of the network
module on the sequence program.
Eliminates the refresh parameters setting by using
default values of refresh parameters.
: Compatible, : Partial change required, × : Incompatible
Compat-
Q series Precautions for replacement
ibility
• Substitute the forward loop/
• Set diagnostic items for
Set the function with the PLC
parameter of the remote I/O
module.
: Compatible, : Partial change required, × : Incompatible
Compat-
Q series
Precautions for replacement
ibility
*2
reverse loop test for the
station-to-station test.
station-to-station test and
forward loop/reverse loop test
in GX Works2 or GX
Developer network
parameters.
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