Memory Plug; Cpu Module Ws0-Cpu0; Description - Mitsubishi MELSEC-WS0-CPU0 User Manual

Chapter 3
Table 5: Variants of the

memory plug

Note
Note
27
Product description
3.4 Memory plug
On each CPU module there is a memory plug. The system configuration for the entire
MELSEC-WS safety controller is only saved in the memory plug. On the replacement
of modules this situation has the advantage that it is not necessary to re-configure that
the MELSEC-WS safety controller.
There are two different variants of the memory plug that can only be used with specific
CPU modules.
Memory plug Compatible CPU modules
WS0-MPL0 WS0-CPU0
WS0-CPU1
WS0-MPL1 WS0-CPU3
 The CPU module, the internal logic for all modules as well as the inputs (I1...I8)
and test outputs (X1...X8) on the safety I/O modules are only supplied electrically
via the memory plug. On the other hand the outputs are supplied separately (Q1 to
Q4, Y1 to Y6 as well as IY7 and IY8).
 The data saved in the memory plug are also retained on an interruption in the
supply of power.
 If modules are replaced, ensure that the memory plug is reconnected to the correct
CPU module. Mark all the connecting cables and plug connectors unambiguously
on the MELSEC-WS safety controller to avoid confusion.
 If you use a memory plug WS0-MPL0, then after the replacement of EFI-compatible
devices connected you must configure the devices again.
3.5

CPU module WS0-CPU0

3.5.1

Description

The WS0-CPU0 module is the central process unit of the entire system in which all the
signals are monitored and processed logically in accordance with the configuration
stored in the memory plug. The outputs of the system are switched as a result of the
processing, whereby the FLEXBUS+ backplane bus serves as the data interface.
The CPU module WS0-CPU0 can only be operated together with the memory plug
WS0-MPL0.
Functions
 Electrical supply of the MELSEC-WS safety
controller
 Storing the system configuration (without
EFI-compatible devices)
 Electrical supply of the MELSEC-WS safety
controller
 Storing the system configuration (including
EFI-compatible devices)