Replace Melsecnet/Mini(-S3) Remote I/O Station (Building Block Type: Aj72Pt35) With Melsecnet/H Using The Existing External Wiring - Mitsubishi Electric Artisan MELSEC-Q Series Manual

4.5 Replace MELSECNET/MINI(-S3) with CC-Link
4.5.3 Replace MELSECNET/MINI(-S3) remote I/O station (building block type: AJ72PT35) with
MELSECNET/H using the existing external wiring
Solution and Benefit
• MELSECNET/H (remote I/O network) can utilize Q Series large type base unit. Wiring time can be
reduced by utilizing the external wiring of MELSECNET/MINI remote I/O station, which consists of
existing building block type I/O modules.
• Program modification is not required because the number of occupied points are the same for
each I/O module to be replaced. Therefore, programming time and debugging time after the
replacement is reduced.
● Instructions
(1) Replace the existing MELSECNET/MINI(-S3) with MELSECNET/H (remote I/O network).
Install new network cables: optical cable (loop) or coaxial cable (bus).
(Optical cables are used for the following example.)
(2) When the I/O module of the existing MELSECNET/MINI(-S3) remote I/O station is of terminal block type,
utilize the existing terminal block with the external wiring through a Q Series large type base unit and the
following products.
• Q Series large type I/O modules
• Q Series I/O modules + upgrade tool manufactured by Mitsubishi Electric Engineering Co., Ltd.
(3) In MELSECNET/H (remote I/O network) network parameter, set the master station side devices to be the
same as the ones assigned to the existing MELSECNET/MINI in order to avoid program modification.
(1) System configuration example
Current configuration
MELSECNET/MINI master station
A35B
Station number: 1 Number of occupied stations:
16 (number of input/output points: 128)
A35B
Station number: 17 Number of occupied stations:
16 (number of input/output points: 128)
A32B
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MELSECNET/MINI
data link system
After replacement
Q35B
Remote I/O station: Station number 1
Q35BL
Replace
Remote I/O station: Station number 2
Q33B
104
Remote I/O network master station
MELSECNET/H remote
I/O network (optical loop)
QG69L
QX41 QY41P
Existing Existing Existing Existing
terminal terminal terminal terminal
block block block block
Existing Existing
connector connector