Prosoft-technology MVI56-PDPMV1 Uživatelský manuál stáhnout pdf (Strana 230)

Reference MVI56-PDPMV1 ♦ ControlLogix Platform

User Manual PROFIBUS DPV1 Master

Page 230 of 255 ProSoft Technology, Inc.

March 22, 2011

5.4.1 Legacy Mode Input and Output Data Blocks

The following illustration shows how the transfer of user data, mailbox block, and

status data is performed between the MVI56-PDPMV1 and the ControlLogix

processor.

The blocks that are transferred between the module and the processor can

perform different tasks, according to the Block ID numbers, as listed in the

following table.

Block ID Numbers for Transfer

Block #s Type Description

-1 or 0 Status Block containing status data (refer to Status Objects)

1 to 4 Input Data Input data from PROFIBUS network with each block containing up

to 200 words of data (refer to Input Data Block)

1 to 4 Output Data Output data for PROFIBUS network with each block containing up

to 200 words of data (refer to Output Data Block)

100 to 109 Mailbox These block numbers send or receive mailbox messages (refer to

PDPMV1_Mailbox data type)

200 to 209 Alarms These block numbers send alarm messages from the PROFIBUS

network to the processor (refer to PDPMV1_Alarm).

The size of the input and output areas should be set to the smallest possible

values to maximize data throughput.

Handshaking is required between the in and out messages used by the module

and the controller.

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Prosoft-technology MVI56-PDPMV1 Uživatelský manuál Strana 230