Mitsubishi Electric MELSEC-Q Series User Manual page 416

(c) On the system monitor (Product Information List)
In "System Monitor" of "Diagnostics" on a programming took, click the
• Display of a production number
Because a master/local module does not support a production number display, a hyphen (-) is displayed.
The serial number on the rating plate and the front of the module may differ from that on the production information list
window of a programming tool.
• The serial number on the rating plate and the front of the module indicates the management information of the
product.
• The serial number on the production information list window of a programming tool indicates the functional
information of the product. The functional information of the product is updated when a new function is added.
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button.