Prosoft-technology 5204SE-MNET-PDPMV1 Manual do Utilizador descarregar pdf (Página 186)

5204SE-MNET-PDPMV1 ♦ ProLinx Gateway Reference

Modbus TCP/IP to PROFIBUS DP-V1 Pass-Through Master User Manual

Page 186 of 235 ProSoft Technology, Inc.

December 22, 2009

DFB Acyclic Mailbox Message: Read Class 1 Acyclic Data - Quantum

Some, but not all, PROFIBUS DP-V1 slaves are capable of providing more data

that can be configured for normal cyclic polling. Acyclic data read messages

allow the PROFIBUS Master to request this additional data from slaves that can

provide it. This acyclic message initiates a PROFIBUS DP-V1 Class 1 Acyclic

Read Request. Refer to protocol specification EN50170 (DP-V1) for more

information about this type of acyclic message.

MNETDPV1_MAILVAR_AcyclicRead Variables - Quantum

This variable structure is the one to use with your control and sequencing logic

when you want to send a request to read PROFIBUS DP-V1 Class 1 Acyclic

Data.

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Prosoft-technology 5204SE-MNET-PDPMV1 Manual do Utilizador Página 186