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Appendix 5 Differences Between LCPU and QnUCPU
This section describes the specification comparison between the LCPU and QnCPU and the precautions for using the
existing system.
Appendix 5.1 Specification Comparison
The following table shows a comparison of the specifications between LCPU and QnCPU.
Item Description
Difference
LCPU QCPU
System
configuration
Basic configuration
• Power supply module
• CPU module
• I/O modules and intelligent function modules
• End cover
• Power supply module
•CPU module
• I/O modules and intelligent function modules
• Base unit
Module installation Modules are connected in order. Modules are mounted on the base unit.
Number of modules
Up to 10 modules (except for an RS-232 adapter
and an END cover)
Up to 64 modules (Q00UJCPU:16 modules, Q00U/
Q01UCPU: 24 modules, Q02UCPU: 32 modules)
System extension Not allowed Allowed
Power supply module ERR contact not provided ERR contact provided
Multiple CPU system
configuration
Not available Available
Redundant power supply
system configuration
Not available Available
Memory card type SD memory card
• SRAM memory card
• Flash memory card
• ATA memory card
Built-in function
Serial communication
function
Not available Available (Q00U(J)/Q01U/Q02UCPU only)