Functional Comparisons - Mitsubishi Electric MELSEC-A Series Manual

5
REPLACEMENT OF THE MELSECNET/10 (REMOTE I/O NETWORK)

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.
Item
Communicating with a special
function module
(Cyclic transfer function)
Dedicated link instruction
I/O assignment function
ZNFR/ZNTO instruction access
number setting function
Blown fuse error and input/output
verification error check disabled
function
Operation mode at an error
*1 Change the network parameter of the master station as well. For details, refer to
Description
A/AnS/QnA/QnAS series Q series MELSECNET/H module
MELSECNET/10 module
Performs communications with each module on the remote I/O
station using X/Y (LX/LY) and B/W (LB/LW).
Reads or writes data from/to the buffer memory of the special
function module on the remote I/O station.
Sets the module configuration of the remote I/O station.
Sets the number of transient transmissions that can be executed
during one link scan (a total of entire one network).
Sets whether to enable or disable the error check of a blown fuse
error and an input/output verification error.
Sets an operation mode to be used when a blown fuse error or an
input/output verification error occurs.
Compatibility
(MELSECNET/10 mode)
Precautions for replacement
Check and modify a program because
buffer memory addresses of intelligent
function modules differ between A/AnS/
QnA/QnAS series and Q series.
Set the configuration with the PLC
parameter of the remote I/O module.
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.
Set whether to enable or disable the
error check with the PLC parameter of
the remote I/O module.
Set an operation mode with the PLC
parameter of the remote I/O module.
.
Section 5.2.6
*1
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