ProSoft MVI56-PDPMV1, Руководство пользователя

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MVI56-PDPMV1 ♦ ControlLogix Platform Reference
PROFIBUS DPV1 Master User Manual
Page 231 of 251 ProSoft Technology, Inc.
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 module 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.