Mitsubishi Electric MELSEC Q Series User Manual page 79

Table2.9 Restrictions on system configuration, available base units, extension cables, and power supply modules
CPU number
CPU module1: CPU No.1, CPU module 2: CPU No.2, CPU module 3: CPU No.3, CPU module 4: CPU No.4
Maximum number of
extension stages
Maximum number of
mountable I/O
(when the Q00UCPU or Q01UCPU is used: 25-(No. of CPUs), when the Q02UCPU is used: 37-(No. of CPUs))
modules
Available main base
unit model
Type not requiring power supply module
Available extension
Type requiring Q series power supply
base unit model
module
Available extension
cable model
Available power
supply module model
*1: When the Q00UCPU, Q01UCPU, Q02UCPU is mounted on the CPU slot 1, up to three CPU modules can be mounted.
Therefore, the CPU module 4 does not exist.
Precautions
• Do not use an extension cable longer than 13.2m (43.31 ft).
• When using an extension cable, keep it away from the main circuit (high voltage and large current) line.
• Set the number of extension stages so as not to be duplicated.
• Although there is no restriction on the connection order of the Q5 B and the Q6 RB, check the availability
of them by referring to QCPU User's Manual (Hardware Design, Maintenance and Inspection).
• The QA1S6 B, QA6 B, QA6ADP+A5 B/A6 B, or Q6 RB cannot be connected as an extension base
unit.
• Connect the OUT connector of an extension base unit and the IN connector of the adjacent extension base
unit by an extension cable.
• When 66 modules or more (26 modules or more for the Q00UCPU or Q01UCPU, 38 modules or more for the
Q02UCPU) are mounted, an error "SP. UNIT LAY ERR." (error code: 2124) occurs. (The number of
mountable modules includes one CPU module.)
• "No. of CPUs" is the number of CPUs set by [No. of PLC] of GX Developer.
• The PC CPU module and C Controller module cannot be mounted together: therefore; mount either of them.
• The PC CPU module occupies two slots. Therefore, when the PC CPU module is used, the maximum
number of I/O modules is decreased by 1 from the value indicated in the Table2.9.
• For details of the Motion CPU, C Controller module, and PC CPU module, refer to the manuals of each CPU
module.
2 - 31
7 extension stages (when the Q02UCPU is used: 4 extension stages)
65 - (No. of CPUs)
Q33B, Q35B, Q38B, Q312B
Q52B, Q55B
Q63B, Q65B, Q68B, Q612B
QC05B, QC06B, QC12B, QC30B, QC50B, QC100B
Q61P-A1, Q61P-A2, Q61P, Q61P-D, Q62P, Q63P, Q64P, Q64PN
*1