System Configuration Specifications - Mitsubishi Electric MELSEC iQ-R Series Configuration Manual

1.2

System Configuration Specifications

This section describes the overview of the MELSEC iQ-R series system configuration.
CPU module (except the C Controller module)
The following table shows the system configuration of when a CPU module is mounted on a CPU slot of a main base unit.
Item
Module mounting position
Maximum number of mountable
modules
Maximum number of extension base units
Overall extension cable distance
*1 When a CPU module is mounted on a CPU slot, a remote head module cannot be mounted.
*2 Mount modules within the range of the number of I/O points for the CPU module used. ( MELSEC iQ-R CPU Module User's Manual
(Startup))
The number of I/O points can be checked on the engineering tool. ( GX Works3 Operating Manual)
*3 Modules can be mounted on the slot number 63 to the slot on the right of the slot on which the rightmost CPU module is mounted. For
example, when four CPU modules are mounted on the CPU slot and slot number 0 to 2, the maximum number of mountable modules is
61.
*4 The number of mountable modules includes the empty slots. Even if the number of I/O points is set to zero for an empty slot, the slot is
counted as one module.
*5 This is the total number of the extension base units, RQ extension base units, and MELSEC-Q series extension base units.
*6 When a MELSEC-Q series module is used in the system, the overall cable distance is 13.2m.
Overall cable distance:
20m
• Shaded areas are for the power supply modules.
• "CPU" is the CPU slot, and the numbers are slot numbers.
• Modules cannot be mounted on the slots marked .
*7 Depending on a module used, mounting of the maximum number of modules may not be possible because of the rated output current of
the power supply module used. Configure the system taking the current consumption of each module into consideration.
*8 The RnENCPU is a module occupies two slots, and therefore the maximum number of mountable modules decreases due to this one
more slot occupied.
*9 An extension base unit cannot be mounted on a main base unit on which a redundant function module is mounted.
Single CPU system
Multiple CPU system
*9
Redundant system
0 1 2 3 4 5
CPU
12 13 14 15 16 17 18 19 20 21 22 23
× × × × × × × ×
60 61 62 63
Description
Slot number 0 to 63
*2*4*7*8
64
*2*3*4*7*8
57 to 63
11
*5
7
*6
20m
6 7 8 9 10 11
Maximum of seven
extension base units
1.2 System Configuration Specifications
1 SYSTEM CONFIGURATION
1
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