Mitsubishi MELSEC iQ-F series User Manual page 48

Connection to the extension power supply module
There is a limitation on the number of extension modules connected to the extension power supply module as follows.
The number of connected modules from the right side of the extension power supply module to the next extension power
supply module added later must be as follows.
Type
Total No. of I/O modules, intelligent function modules, and bus conversion modules
Total No. of FX5 intelligent function modules, bus conversion modules, and FX3 intelligent function modules
Total No. of FX3 intelligent function modules
Input
Extension
module,
power supply
Output
module
module
The same restrictions apply when connecting modules to a second extension power supply module.
Connection to the bus conversion module (connection with FX3 extension devices)
There is a limitation on the number of extension modules connected to the bus conversion module as follows.
The number of modules connected on the right side of the bus conversion module must be as follows.
Type
Total No. of intelligent function modules
Bus FX3
conversion intelligent
module module
Up to 6 modules
Precautions
FX5 extension modules cannot be connected on the right side of the bus conversion module.
4 SYSTEM CONFIGURATION
46
4.2 Limitations on the Number of Connected Extension Devices
FX5
Connector Bus
intelligent
conversion
conversion
module
module
module
Up to
1 module
Up to 8 modules
Up to 10 modules in total
FX3
intelligent
module
Up to 6 modules
Limitation
Up to 6 modules can be connected.
Limitation
Up to 10 modules can be connected.
Up to 8 modules can be connected.
Up to 6 modules can be connected.