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(3) When a redundant power main base unit (Q3RB) is used
(a) Available modules, the number of extension base units, and the number of
mountable modules
*1 For the CPU modules that can be combined and their mounting positions, refer to Page 60, Section 3.3.2.
*2 When the Q00UCPU, Q01UCPU, or Q02UCPU is used as CPU No.1, one more CPU module (CPU No.2) can be
mounted. The following CPU modules can be mounted as CPU No.2.
(b) Precautions
• If I/O modules are mounted exceeding the maximum number, "SP.UNIT LAY ERR" (error code: 2124)
occurs.
• "Number of CPU modules" indicates the number set in "No. of PLC" of PLC parameter ("Multiple CPU
Setting").
• When a C Controller module which occupies three slots is used, the maximum number of mountable I/O
modules will be two smaller than the number defined in the table on Page 58, Section 3.3.1 (3) (a).
Item Description
Number of CPU
modules
4 CPU modules
Applicable CPU
module
*1
Universal model QCPU
Q00UCPU, Q01UCPU, Q02UCPU
The modules can be used as CPU No.1.
*2
Q03UD(E)CPU, Q03UDVCPU,
Q04UD(E)HCPU, Q04UDVCPU,
Q06UD(E)HCPU, Q06UDVCPU,
Q10UD(E)HCPU, Q13UD(E)HCPU,
Q13UDVCPU, Q20UD(E)HCPU,
Q26UD(E)HCPU, Q26UDVCPU,
Q50UDEHCPU, Q100UDEHCPU
No function version restriction
High Performance model QCPU
Q02(H)CPU, Q06HCPU, Q12HCPU,
Q25HCPU
Function version B
Process CPU
Q02PHCPU, Q06PHCPU, Q12PHCPU,
Q25PHCPU
No function version restriction
C Controller module
Q24DHCCPU-V
Serial number (first five digits) of "14122" or later
when used with the QnUDVCPU
Q24DHCCPU-LS No function version restriction
Maximum number
of extension base
units
7 extension base units (when the Q00UCPU, Q01UCPU, or Q02UCPU is used: 4 extension base units)
Maximum number
of mountable I/O
modules
65 - (Number of CPU modules)
when the Q00UCPU or Q01UCPU is used: 25 - (Number of CPU modules), when the Q02UCPU is used: 37 - (Number of CPU modules)
Applicable main
base unit
Q38RB
Applicable
extension base
unit
Type requiring no power supply module
(Q series)
Q52B, Q55B
Redundant power extension base unit Q68RB
Applicable
extension cable
QC05B, QC06B, QC12B, QC30B, QC50B, QC100B
Applicable power
supply module
Q63RP, Q64RP
(The Q63RP and Q64RP can be mounted on the same redundant power supply base unit.)
CPU module Model
C Controller module Q24DHCCPU-V, Q24DHCCPU-LS