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CHAPTER 3 SYSTEM CONFIGURATION
3
3.2 System Using High Performance Model QCPU or Process CPU as CPU No.1
3.2.1 Available CPU modules, base units, power supply modules, and extension cables
(2) 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 47, Section 3.2.2.
(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 43, Section 3.2.1 (2) (a).
Item Description
Number of CPU
modules
4 CPU modules
Applicable CPU
module
*1
High Performance model QCPU
Q02(H)CPU, Q06HCPU, Q12HCPU,
Q25HCPU
Function version B
Process CPU
Q02PHCPU, Q06PHCPU, Q12PHCPU,
Q25PHCPU
No function version restriction
Universal model QCPU
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
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
Maximum number of
mountable I/O modules
65 - (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.)