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CHAPTER 6 PROGRAMMING
6
6.1 Precautions for System Replacement
CHAPTER 6 PROGRAMMING
6.1 Precautions for System Replacement
Check restrictions and precautions when replacing the MELSECNET/10 remote I/O station with the MELSECNET/H
(MELSECNET/10 mode) remote I/O station.
For the restrictions and precautions, refer to the following.
Transition handbook
(1) I/O assignment
If modules occupy a greater number of I/O points or the number of slots used changes after the replacement, I/O
points need different assignment.
(If modules occupy a smaller number of I/O points, using the I/O assignment in the previous system as is can
avoid the mismatch of the start I/O numbers between the systems before and after the replacement. If the
number of points assigned in parameter is greater than the number of I/O points actually occupied, no error
occurs.)
(2) Program modification
If any intelligent function module is mounted on the MELSECNET/H (MELSECNET/10 mode) remote I/O station,
the following items need to be modified in the sequence program.
• I/O signals
• Buffer memory addresses
(3) Setting additional parameters to the MELSECNET/H (MELSECNET/10 mode)
remote I/O station
If any intelligent function module is mounted on the MELSECNET/H (MELSECNET/10 mode) remote I/O station,
the following parameters need to be set additionally.
• Intelligent function module switch setting
• Initial setting