AS511 on PLC 115 U TYPE 945

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Thread Starter

thierry gruet

want to connect HMI on PLC 115 U TYPE 945 with AS511 protocol.
seems request are really different than PLC115U 940-944.
FOr 115U 945 adresse are coded on 4 bytes format rather 2 bytes like 115U 944.
Read request is OK (04H) but have some problem for write request (03H)

need some information about all AS511 request for 115U 945
thanx
 
S

Sanjay Patel

Dear Friend

Please first use the system_Info query that return the First addresss of PIQ, PII, Retentative flags, Timers, Counters etc. According to the response you can map your I/O of the PLC. If you have stil problem please give me more detail I will help you.

Regards

Sanjay Patel
 
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