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REPLACEMENT OF THE MELSECNET/10 (REMOTE I/O NETWORK)
5
5.2.3 Functional comparisons
To use a MELSECNET/H remote I/O module (MELSECNET/10 mode), the CPU module on the master
station must be an AnU/AnUS/QnA/QnAS series module. For details on functions of a remote I/O
module, refer to a manual for the CPU module used on the master station because the functions differ
depending on which CPU module is used on the master station.
The following table lists function differences among module series.
*1 Change the network parameter of the master station as well. For details, refer to Section 5.2.6.
Item
Description
Compatibility Precautions for replacement
A/AnS/QnA/QnAS series
MELSECNET/10 module
Q series MELSECNET/H module
(MELSECNET/10 mode)
Communicating with a special
function module
(Cyclic transfer function)
Performs communications with each module on the remote I/O
station using X/Y (LX/LY) and B/W (LB/LW).
Dedicated link instruction
Reads or writes data from/to the buffer memory of the special
function module on the remote I/O station.
Check and modify a program because
buffer memory addresses of intelligent
function modules differ between A/AnS/
QnA/QnAS series and Q series.
I/O assignment function Sets the module configuration of the remote I/O station.
Set the configuration with the PLC
parameter of the remote I/O module.
*1
ZNFR/ZNTO instruction access
number setting function
Sets the number of transient transmissions that can be executed
during one link scan (a total of entire one network).
The number of transient transmissions
executed during one link scan differs
depending on the total number of slave
stations. The number of transient
transmissions executed for one station
is the same, though.
Blown fuse error and input/output
verification error check disabled
function
Sets whether to enable or disable the error check of a blown fuse
error and an input/output verification error.
Set whether to enable or disable the
error check with the PLC parameter of
the remote I/O module.
Operation mode at an error
Sets an operation mode to be used when a blown fuse error or an
input/output verification error occurs.
Set an operation mode with the PLC
parameter of the remote I/O module.
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