Number Of Connected Extension Modules (Including Extended Extension Cable) - Mitsubishi Electric MELSEC iQ-F Series User Manual

Number of connected extension modules (including extended
extension cable)
Overall system limitation
There is a limitation on the number of connected extension modules in a whole system as follows.
Type
Extension module
Extension power supply module
Connector conversion module
Extended extension cable
(excluding extension power supply module and connector conversion module)
I/O
CPU module
module
Connection to the CPU module
There is a limitation on the number of extension modules connected to the CPU module as follows.
The number of extension modules added from the right side of the CPU module to powered input/output module or the
extension power supply module must be as follows.
Type
Total No. of input modules, output modules, and intelligent function modules
Input
module,
CPU module
Output
module
Up to 2 module
In addition, there are limitations on the above figures: (1) and (2).
■Limitation (1)
• Up to 2 modules can be connected.
• The total number of occupied input/output points of extension modules must be 32 points or less.
• When the occupied input/output points are 32 points in the first module, limitation (2) applies for connections of the second
and subsequent modules.
■Limitation (2)
• Up to 2 modules can be connected.
• When one extension module is connected, it unconditionally consumes 200 mA from the 24 V DC service power.
• When the 24 V DC service power is insufficient because external power supply of the extension module is supplied from
the 24 V DC service power of the CPU module, etc., the extension module cannot be connected.
When connecting FX5-EX/ES to the above figures, (1) and (2), and the 24 V DC service power supply is
used for the input circuit of FX5-EX/ES, they do not consume the 24 V DC service power supply.
4 SYSTEM CONFIGURATION
52
4.2 Limitations on the Number of Connected Extension Devices
Limitations
Up to 8 modules can be connected to a system.
(Extension power supply modules and connector conversion module are excluded.)
Only 1 module can be connected to a system.
Only 1 module can be connected to a system.
Only 1 cable can be connected to a system.
Up to 8 modules
Extension
power
I/O
supply module
module
Up to 1 module
Input
Intelligent Intelligent
module,
module module
Output
module
Up to 2 module
(1) (2)
Up to 4 module
Connector
I/O
conversion
module
module
Up to 1 module
Limitations
Up to 4 modules can be connected.
Powered input/
Input
output module,
module,
extension
Output
power supply
module
module
Intelligent
module