ProSoft Technology MVI56E-MNETC User Manual page 120

Reference
User Manual
Event Sequence Command Count Status (4200)
This block displays the command queue status data for all clients. The response
is the priority command queue count and the Event Sequence Command status
queue count.
Block Request from Processor to Module
Word Offset
0
1 to 247
Block Response from Module to Processor
Word Offset
0
1
2 to 31
32 to 248
249
In words 2 to 31 of this block, each word has two bytes:

Byte 1: Number of Event sequence commands for which status has not yet
been retrieved (up to 15). This corresponds to the
MNETC.STATUS.EventSeqCmdPending.Client[x]_QueueCount controller
tag.

Byte 2: Total number of commands waiting in the command queue. This
includes Event Commands, Event Commands with Sequence Numbers, and
Command Control messages. This corresponds to the
MNETC.STATUS.EventSeqCmdPending.Client[x]_WaitingMsgs controller
tag.
Controller Tags
To retrieve status data for all 30 clients at a time, enter the appropriate values in
the following members of the MNETC.STATUS.EventSeqCmd controller tag in
the ladder logic.
Controller Tag
Trigger
Page 120 of 172
Modbus TCP/IP Client Enhanced Communication Module - Client/Server
Description
4200
Reserved
Description
Reserved
Write Block ID
Command queue status data for each Client
Reserved
Read Block ID: 4200
Data Type Description
BOOL Set the value of this tag to 1 to trigger the Command
queue status data request.
MVI56E-MNETC/MNETCXT ♦ ControlLogix Platform
ProSoft Technology, Inc.
Length
1
247
Length
1
1
30
217
1
September 20, 2018