ProSoft Technology MVI56E-MNETC

Reference MVI56E-MNETC/MNETCXT ♦ ControlLogix Platform
User Manual Modbus TCP/IP Client Enhanced Communication Module - Client/Server
Page 120 of 172 ProSoft Technology, Inc.
September 20, 2018
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
Description
Length
0
4200
1
1 to 247
Reserved
247
Block Response from Module to Processor
Word Offset
Description
Length
0
Reserved
1
1
Write Block ID
1
2 to 31
Command queue status data for each Client
30
32 to 248
Reserved
217
249
Read Block ID: 4200
1
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
Data Type
Description
Trigger
BOOL
Set the value of this tag to 1 to trigger the Command
queue status data request.