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CNC C6/C64/C64T DDB INTERFACE MANUAL BNP-B2312A(ENG) MELDAS and MELSEC are registered trademarks of Mitsubishi Electric Corporation.

The other company names and product names are trademarks or registered trademarks of the respective companies. Introduction This manual describes the DDB (Direct Data Bus) function used to realize data input/output with a CNC while running a program developed with a MELDAS C6/C64/C64T user PLC (ladder language). The methods for reading and writing various NC information using the DDB from a PLC are described in this manual. Please read this manual before programming. Please read the Precautions for Safety listed on the following page to ensure safe use of the MELDAS C6/C64/C64T. Details described in this manual CAUTION For items described in Restrictions or Usable State , the instruction manual issued by the machine maker takes precedence over this manual. Items not described in this manual must be interpreted as not possible . This manual is written on the assumption that all option functions are added. Refer to the specifications issued by the machine maker before starting use. Refer to the Instruction Manual issued by each machine tool builder for details on each machine tool. Some screens and functions may differ depending on the NC system (or its version), and some functions may not be possible. Please confirm the specifications before use. Setting incorrect values could cause the machine to malfunction or run away. Take care when programming. General precautions The following documents are available as documents related to the contents of this manual. Refer to these as required. C6/C64 PLC Programming Manual(Ladder section with MELSEC tool) .... BNP-B2309 C6/C64/C64T PLC Interface Manual.BNP-B2261 Precautions for Safety Always read the specifications issued by the machine maker, this manual, related manuals and enclosed documents before starting installation, operation, programming, maintenance or inspections to ensure correct use. Thoroughly understand the basics, safety information and precautions of this numerical controller before using the unit. The safety precautions are ranked as DANGER , WARNING and CAUTION in this manual. DANGER When there is a great risk that the user could be subject to fatalities or serious injuries if handling is mistaken. WARNING When the user could be subject to fatalities or serious injuries if handling is mistaken. CAUTION When the user could be subject to injuries or when physical damage could occur if handling is mistaken. Note that even if the item is ranked as CAUTION , incorrect handling could lead to serious results. Important information is described in all cases, so please observe the items. DANGER Not applicable in this manual. WARNING Not applicable in this manual. CAUTION 1. Items related to product and manual For items described as Restrictions or Usable State in this manual, the instruction manual issued by the machine maker takes precedence over this manual. Items not described in this manual must be interpreted as not possible . This manual is written on the assumption that all option functions are added. Refer to the specifications issued by the machine maker before starting use. Refer to the Instruction Manual issued by each machine tool builder for details on each machine tool. Some screens and functions may differ depending on the NC system (or its version), and some functions may not be possible. Please confirm the specifications before use. Setting incorrect values could cause the machine to malfunction or run away. Take care when programming. Contents 1. Outline