Mitsubishi Electronics Q12HCPU ユーザーズマニュアル

36

(4) When a multiple CPU high speed main base unit (Q3DB) is used

*1

For the CPU modules that can be combined and their mounting positions, refer to Page 37, Section 3.1.2.

 • 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 36, Section 3.1.1 (4) (a).

 • A PC CPU module occupies two slots. When this module is used, the maximum number of mountable I/O 

modules will be one smaller than the number defined in the table on Page 36, Section 3.1.1 (4) (a).

Number of CPU 
modules

2 CPU modules

CPU No.1 (Basic model QCPU)
CPU No.2 (C Controller module or PC CPU module)

Applicable CPU 

module

*1

Basic model QCPU

Q00CPU, Q01CPU

Function version B or later

C Controller module

Q06CCPU-V, Q06CCPU-V-B, 
Q12DCCPU-V, Q24DHCCPU-V, 
Q24DHCCPU-LS

No function version restriction

PC CPU module

PPC-CPU686(MS)-64,
PPC-CPU686(MS)-128,
PPC-CPU852(MS)-512

Manual for the PC CPU 

module used

Maximum number of 
extension base units

4 extension base units

Maximum number of 
mountable I/O 
modules

25 - (Number of CPU modules)

Applicable main base 
unit

Q35DB, Q38DB, Q312DB

Applicable extension 
base unit

Type requiring no power supply 
module (Q series)

Q52B, Q55B

Type requiring power supply module 
(Q series)

Q63B, Q65B, Q68B, Q612B

Applicable extension 
cable

QC05B, QC06B, QC12B, QC30B, QC50B, QC100B

Applicable power 
supply module

Q61P-A1, Q61P-A2, Q61P, Q61P-D, Q62P, Q63P, Q64P, Q64PN