TECHNICAL BULLETIN
Contents
1. TECHNICAL BULLETIN Issue No T99 0049 D Page 11 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 3 4 Considering replacement method by the station to station and overall cable distances Communication cable for MELSECNET II optical cable and or coaxial cable can be used with MELSECNET 10 As the distance between stations is shortened confirm whether or not the condition to use is satisfied to the following information 1 Allowable station to station and overall distances for communication cables MELSECNET 10 Sc UES e SL WREST In MELSECNET 10 mode of the Q series Item Optical loop _ loop Coaxial loop Twisted pair Optical loop shielded Station to station 125kBPS 1200m i Ikm 2km 500 Ikm 2km 300m 500m Overall cable 500kBPS 400m distaric 10km 10km 1MBPS 200m 30km 30km 30km 1 Some optical cables used in MELSECNET ID provide shorter connection length than do optical cables for MELSECNET 10 Confirm the cable installation in the existing system to know whether or not the condition to use is satisfied to the following information Optical cable Note Station to station distance MIBLSEGNET MELSECNETA H PCF 6dB km 1000m 1000m 12dB km 1000m 24dB km Note For more details on optical cables co2. Normal MELSECNET 10 Normal MELSECNET 10 network module By this method you can gradually transition from the A series system to the Q series system and complete the transition aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 10 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 3 3 Considering replacement method by system configuration Differences in network configurations of MELSECNET II B and MELSECNET 10 are explained below MELSECNET ID B MELSECNET 10 Local station system Configure a MELSECNET 10 PLC to PLC network Remote I O system Configure a MELSECNET 10 remote I O network 6550 Ce Local and remote I O system Configure separate networks for local stations and remote I O stations o afan C Oe Re or 2 e G 3 tier system Mount 2 MELSECNET 10 modules to the 3 tier master station to configure 2 networks Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN
3. 1 When reusing a Data Link CPU module AnNCPUP21 R21 AnACPUP R21 etc In order to use a Data Link CPU module in the MELSECNET 10 network an additional one slot and 32 I O points are required for installation of a MELSECNET 10 network module The Data Link CPU module can be used as it is only by changing the mode select switch to Offline 2 When replacing MELSECNET ID coaxial loop system While MELSECNET II coaxial cables are used in the duplex loop system there are no Q series modules compatible with the MELSECNET H 10 coaxial loop system When replacing the system with the Q series system configure either of the optical loop or coaxial bus system 3 When MELSECNET ID system uses GI cables There is no AnSCPU A2USCPU Q2ASCPU compact type compatible MELSECNET H 10 network module that supports GI cables Therefore use the following methods E When using the existing GI cables Replace the existing PLCs with the Q series PLCs that are compatible with MELSECNET H 10 network modules supporting GI cables E When using the existing PLC CPUs Use a MELSECNET 10 network module supporting SI cables or coaxial cables aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 14 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep
4. Changing the system at one time ce eeceecccesceneeeeseeseecneeececseeeeaeeeeeneeneeenseee Refer 5 3 1 2 Changing the system gradually ecceceeescscsssceesseeeceeeeeceseceeeseeeaeceeseeneseeeneees Refer 5 3 2 Please note that in 5 3 3 to 5 3 6 we have listed the differences between MELSECNET ID B and cautions we would like you to take so please confirm 1 MELSECNETI communication cables optical cables and coaxial cables can be used in MELSENET 10 also But the station to station distance is shorter so please refer to Section 5 3 4 and confirm if your conditions are satisfied 2 MELSECNET B twisted pair cables cannot be used in MELSECNET 10 Please consider transition to an optical loop system or coaxial bus system Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 8 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 3 1 Changing the MELSECNET ID B system to the MELSECNET 10 at one time Use the MELSECNET II B system wiring and change at one time to the MELSECNET 10 system After change the A Series system to the Q series syst
5. We will stop producing the products stated in Section with the schedule shown below With reference of the schedule please notify us and order the number of the products necessary 1 A series data link modules Transition to made to order October 1 2005 Order acceptance Through August 2006 Final production Through September 2006 For products we will continue production for spare parts usage is as following Start of order acceptance September 1 2006 Order acceptance Through August 2008 Final production Through September 2008 2 AnS series data link modules PC interface boards Transition to made to order October 1 2007 Order acceptance Through August 2008 Final production Through September 2008 3 Reasons for discontinuing production Conventional main electronic components of the relevant PLC models i e semiconductor components micro computer memory ASIC etc are now absolutely difficult to obtain as they are produced based on the stricter process rules and the contributions to environmental conservation such as lead free compliance to RoHS directives are required We have been producing A QnA series products by securing the stock of these obsolete components However the stock is about to run out and we have extreme difficulty to maintain the production system and product quality 4 Spare parts correspondence 1 A series data link modules Repair acceptance Through Septe
6. 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 4 Refresh time of MELSECNET ID and MELSECNET 10 Since the link refresh time of the MELSECNET 10 is longer than that of the MELSECNET II the sequence scan time END processing time of CPU is extended However as the shorter link scan time is taken for the MELSECNET 10 compared with the MELSECNET ID no problem is identified in the transmission delay time For details refer to the manual of the network module used Example Link refresh time msec when total link points for all stations is 4096 for LB LW each Link refresh time CPU module MELSECNET ID MELSECNET 10 E MUCUGD 7 06 aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN
7. for existing MELSECNET ID B systems cccceecceesseeseeeseceeeeeeeeneeeees 6 5 2 1 Adding Q series Q mode local stations cccccceessceseeesseeeeeeeecseeeesecneeceaecaeceseeeaeeseeeeseeneeenseees 6 5 2 2 Additions renewals by using AnS Series ccscceseseseccnecesesseeseceseeeeeseceseeeseeneseeeeecnesenseeeneeeeeaees 7 5 3 Replacing MELSECNET ID B to MELSECNET 10 ecesccsessceeseeseeeececesessesseceeceeesseceseeeeateneeaees 7 5 3 1 Changing the MELSECNET ID B system to the MELSECNET 10 at one time 00 0 eee eeeeeeeeee 8 5 3 2 Changing the MELSECNET I B system to the MELSECNET 10 gradually ee eeeeeeeeeees 9 5 3 3 Considering replacement method by system configuration ccesecesseceessecesseceeeeeeeceeeeeeaeeees 10 5 3 4 Considering replacement method by the station to station and overall cable distances 11 5 3 5 Considering transition to the MELSCNET 10 by MELSECNET II or B parameter OF he CXIStING SVStSM yt ie he weet celeckesteasseaducedecusteeevtesdevner teshaul a aaa fei edeaet ea a ois 13 5 3 6 Cautions on differences in hardware configuration cccccccesseesceeseeeseseeceseeneeeeseeseeeneeeaeensaeeaes 13 aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 2 14 Title Production discontinuation
8. of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 1 Models to be discontinued 1 A series data link modules Product Product name Discontinuation Date MELSECNET I Data link module AJTIAP21 83 AJ71P22 S3 AJ71AP22 S3 Remark Spare Parts 1 Through Continue production through September 2008 September AJ72P25 S1 2006 AJ72P25 S3 Continue production through September 2008 ananassi e 7 cna MELSECNET B _ Datalink module AJ71AT21B Continue production through September 2008 1 We will continue production for 6 models for spare parts usage after product discontinuation October 1 2006 to through September 2008 As for CPU modules with link functions AnNCPUP21 R21 AnACPUP21 R21 and others these modules will also be discontinued on September 2006 For more information please refer to Technical Bulletin No T99 050 Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 3 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR2
9. 1 A1SJ71AT21B are not included in the discontinuation target 2 AnS series data link modules PC interface boards Product Product name Model Discontinuation Remarks Model not subject to product discontinuation Date MELSECNET I Datalink module A1SJ71AP21 S3 Continued production for A1SJ71AP21 A1SJ71AR21 Interface board A70BD J71AP23 A7BDE J71AP21 Through A7BDE J71AP21 S3 September A98BD J71AP23 2008 A7BDE J71AR21 MELSECNET B Data link module A1SJ72T25B Continued production for A1SJ71AT21B For Customers using AnS series MELSECNET ID B data link modules We will continue production for the A1SJ71AP21 Master local module supporting optical data link systems SI cables A1SJ71AR21 Master local module supporting coaxial data link systems and AISJ71AT21B Master local module supporting twisted pair shielded data link systems so An ries MELSECNET ID B master local station systems can ontinuously used aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 4 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 2 Production discontinuation
10. B data link module cannot be used We are planning to make a new release for this product aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 7 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 2 Adding by using a relay station Example of when adding a local station and also transition of part of the system from A series PLC to Q series PLC Relay station Local Control Q Normal CPU station station MELSECNET 10 Gpy station O MELSECNET I MELSECNET 10 network module MELSECNET II data link module Caution For the other stations the existing A series systems can be used 5 2 2 Additions renewals by using AnS series For the MELSECNET II B data link modules for the AnS series A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B we will continue production so please consider system connectivity using the AnS series modules as well 5 3 Replacing MELSECNET ID B to MELSECNET 10 For transition from existing MELSECNET ID B to Q series MELSECNET 10 H there are 2 methods you can select and we will explain as following 1
11. NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 6 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 2 Additions modifications for existing MELSECNET ID B systems We propose additions modifications using the Q series Q mode and AnS series at Pa Station Addition 5 2 1 Adding Q series Q mode local stations When adding a Q Series Q mode local station to an existing MELSECNET II B system there are 2 methods you can select and we will expain as following Adding by using a AnS local station dedicated module Adding by using a relay station 1 Adding by using a AnS local station dedicated module Attach the AnS local station dedicated module to the Q Series Q mode QA1S6LJB extension base module and connect to the MELSECNET II system Only High performance CPUs can be used on the QA1S6LB extension base module Basic model CPUs Process CPU Redundant CPU cannot be used As for the release date of the AnS local station dedicated module we will notify you later Q Series k QA1S60B extension base module AnS local station dedicated module MELSECNET II Caution The existing MELSECNET ID
12. TECHNICAL BULLETIN Issue No T99 0049 D Page 1 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target Thank you for your continued support of Mitsubishi programmable logic controllers Thank you for your continued support of Mitsubishi programmable logic controllers MELSEC A QnA series MELSEC A and QnA series have been used in many production sites with rise of Japanese production business for about 20 years since they were released in 1985 However unfortunately we are now unable to continue the production of them and have decided to discontinue the MELSECNET ID B data link modules This technical bulletin is to provide the information regarding this production discontinuation Contents 1 Models tobe discontinued ascits isc arctan a ae ties EER EEE A uae rA aS 2 2 Production disCONMNUALION ssm iiaeaa ai ai a E 4 3 Reasons for discontinuing production ccceccccessesseesseeseeceseeseeceseeseeceseeeseeseeceeceseeeseeesaeeseeceaeeqeeeeeeesaes 4 4 Spare parts COrrespOndence unssin a a a a a a a ia 4 5 R commendable proposals inne enon a aeo a a a o aa los 5 5 1 Correspondence for maintenance ceeesesseseccnseecesseesececeecesecsecseeaeeceneceseceeeseeeaeceesseeeseecesseeeaeeneeaees 5 5 2 Additions modifications
13. em Before Transition Transition Step1 Transition Step2 Transition Completed A Series System Q Series System Transition Step 1 Change all stations that are MELSECNET II B data link modules to MELSECNET 10 network modules and change to a MELSECNET 10 network system Change the MELSECNET II B master station to MELSECNET 10 master station For CPU modules that cannot be set as MELSECNET 10 master stations AnNCPU AnACPU please consider to changing to Q series Q mode Set the MELSECNET ID B local stations as MELSECNET 10 normal stations Transition Step 2 For stations that are to be changed from A series systems to Q series systems replace the PLCs to the Q series and set them as MELSECNET 10 normal stations By gradually transferring the A series systems to the Q series systems you will be able to complete the transition to the Q series system Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 9 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 3 2 Changing the MELSECNET ID B system to the MELSECNET 10 gradually Use
14. mber 2013 For 7 years after production discontinuation For products we will continue production for spare parts usage we will accept repair till the end of September 2015 2 AnS series data link modules PC interface boards Repair acceptance Through September 2015 For 7 years after production discontinuation aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 5 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 Recommendable proposals Regarding the MELSECNET II B data link module production discontinuation we propose the following for Maintenance Additions modifications and transition from MELSECNET II B to MELSECNET 10 H Maintenance Preparation of exchange modules for module failure 1 Preparation of spare parts 0 esesesseseseesesessesessesesesscsescseeessesesesscseateasaeensseaeeneaes Refer 5 1 1 2 Utilizing A1S conversion adapter and A1S series modules ceeeeeeeeeeeeees Refer 5 1 2 Additions modifications Correspondence to adding local stations toa MELSECNET ID B data link system 1 Adding Q series Q mode local sta
15. ntact your nearest sales office 2 Actions to be taken when the optical cable length exceeds the allowable MELSECNET 10 station to station distance Take either of the following actions Action 1 Replace it with an optical cable that meets the station to station distance specification Action 2 Add a relay station Existing system Action 1 Action 2 Replace it with we an optical cable that meets the station to station distance spec Setting currently unused station No to the added station reduces the effect on programs for other stations Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 12 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 3 Actions to be taken when the coaxial cable length exceeds the allowable station to station or overall distance Additionally use the A6BR10 A6BR10 DC repeater unit for the MELSECNET 10 coaxial bus system For details refer to Repeater Unit for the MELSECNET 10 Coaxial Bus System type A6BR10 A6BR10 DC User s Manual IB 66499 A a Use of one repeater unit can increase the distance
16. of 500m 5C 2V or 300m 3C 2V Max 500m 5C 2V 300m 3C 2V R R A6B R10 CPU BR CPU e AJ71BR11 JHR R Terminating resistor 500m 5C 2V Max 300m 3C 2V b Up to 4 repeater units are connectable per network The overall cable distance can be increased to the maximum of 2 5km BR CPU gt a wW gt a ive a a t a Max 2 5km 4 Twisted pair shielded cable Twisted pair shielded cables are not used in the MELSECNET 10 Consider replacing with a system using optical loop or coaxial buses aMITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN NAGOYA WORKS 1 14 YADA MINAMI 5 CHOME HIGASHI KU NAGOYA JAPAN TECHNICAL BULLETIN Issue No T99 0049 D Page 13 14 Title Production discontinuation of MELSECNET II and B Date of Issue Sep 05 data link systems Relevant Models MELSECNET II and B data link modules A1SJ71AP21 A1SJ71AR21 A1SJ71AT21B are not included in the discontinuation target 5 3 5 Considering transition to the MELSCNET 10 by MELSECNET ID or B parameter of the existing system MELSECNET II Local station B W assignment range when changing to MELSECNET 10 parameter mode AnNCPU AnSCPU AnACPU AnUCPU A2USCPU QnACPU Q2ASCPU MELSECNET mode Not changed Not changed N
17. ot changed Refresh parameter setting is required MELSECNET First half Not changed Not changed Not changed composite mode only Refresh parameter setting is required First and 1 The set range for the first 1 The set range for the first half can be used second Combining the first half can be used without without change halves half with the second change 2 Setting is not available for the second half half is not available for 2 Setting is not available 3 Refresh parameter setting is required assignment for the second half MELSECNET II First half Not changed Not changed mode only Refresh parameter setting is required First and Connection not 1 The set range for the first 1 The set range for the first half can be used second available in the half can be used without without change halves MELSECNET II change 2 Setting is not available for the second half mode 2 Setting is not available 3 Refresh parameter setting is required for the second half 1 When the MELSECNET II data link parameter has been set being divided into the first half 1024 bytes station and the second half 1024 bytes station changing the B W assignment range and program check are required because one consecutive area 2000 bytes station is used for the MELSECNET 10 network parameter To reduce changes on programs consider section 5 3 2 5 3 6 Cautions on differences in hardware configuration
18. the MELSECNET I B system wiring and change gradually to the MELSECNET 10 system station by station After change the MELSECNET ID B system to the MELSECNET 10 H series system By introducing a relay station make gradual transition to the Q series system Repeating replacement in the Before transition Transition step transition step Transition completed make transition to the Q series system MELSECNET B MELSECNET B By introducing a relay station make gradual transition to the Q series system Transition Step MELSECNET 10 network unit MELSECNET II B data link modules are to be set as MELSECNET I B data link by using the relay station Master station MELSEC NET II Relay station Local Control cry station MELSECNET II data link module to the Q series system OOOOO SOOO Before transition Transition step System configuration is to be done as MELSECNET 10 for stations that are to be transitioned from A series system to Q series system For stations to be transitioned to Q series system connect via the relay station to the existing MELSECNET II B data link The relay station is configured by the MELSECNET ID B data link unit and the ocal stations MELSECNET 10 network modules to be set as master stations Below is an example of the A4 station and A5 station transitioned to the Q series system and connected to the
19. tions sesssesssseteteeseseceseeeeeeeeseseseseneneneeeeeees Refer 5 2 1 2 Adding AnS series local stations 00 0 0 eseesesseseesesesseseeeeseaeeseseseeeensaneneneaeneees Refer 5 2 2 Transition from MELSECNET I B to MELSECNET 10 H Transition from an existing MELSECNET II B data link system to Q series MELSECNET 10 H 1 Changing the system at one time oes ceeseseeseeeeseseesesesteseseeseseeeeeaesteeaeenene Refer 5 3 1 2 Changing the system gradually ccesessesessseseseseseseseseeseteneeeeeneseseseaeeesnenseeeeaeaeaeees Refer 5 3 2 5 1 Correspondence for maintenance 1 Please purchase spare parts before order deadline We will discontinue production as listed in Section 2 but we will continue production for spare parts usage for 2 years until September 2008 for the main MELSEC A QnA Large type models refer to Section 1 1 2 We are planning to release an A A1S conversion adapter for machinery line modifications Mainly for usage in machinery line modifications we will propose usage of our A A1S conversion adapter and AIS modules For explanation of the A A1S conversion adapter please refer to Technical bulletin T99 0050 As for modules that can be used with this adapter we will notify later around July 2005 As for the release date of the A A1S conversion adapter we will notify you later Aa MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE 1 8 12 OFFICE TOWER Z 14F HARUMI CHUO KU 104 6212 JAPAN
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