Last Stage Of The Replacement - Mitsubishi Electric MELSEC-A Series Manual

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

5.2.7 Last stage of the replacement

This section describes the last stage of the step-by-step replacement of the MELSECNET/10 remote I/O
stations with the MELSECNET/H remote I/O stations. The replacement is conducted by using the
MELSECNET/10 mode of MELSECNET/H remote I/O modules.
(1) Last stage of the replacement
A MELSECNET/H remote I/O module (MELSECNET/10 mode) can be used when the CPU module on
the master station is A/AnS/QnA/QnAS series.
When replacing the CPU module on the master station with a Q series module, replace the network as
well (from MELSECNET/10 remote I/O to MELSECNET/H remote I/O). In this case, Q series modules
are used for all remote I/O stations.
The last stage of the step-by-step replacement of the MELSECNET/10 remote I/O network is when the
CPU module on the master station is replaced with a Q series module.
(2) How to replace the master station
Replace the master station in the same way as the MELSECNET/10 remote I/O is collectively replaced.
For details, refer to Section 5.1.
(3) How to replace remote I/O stations
For MELSECNET/H remote I/O modules at the step-by-step replacement, the mode setting switches
are set to MELSECNET/10 mode "8".
At the last stage of the replacement where the network is replaced with the MELSECNET/H remote I/O,
if the mode setting switches are changed to Online (MELSECNET/H mode) "0" or "4", all of the modules
on the stations can be used as they are.
Note that to use the buffer memory read or write of an intelligent function module, program checks and
modifications are required for the dedicated link instructions (from the A series instructions to the Q
series instructions).
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