ProSoft Technology MVI69L-MBTCP - Manual (Page 133)

MVI69L-MBTCP ♦ CompactLogix Platform Reference
Communication Module User Manual
ProSoft Technology, Inc. Page 133 of 152
January 6, 2014
7.4.7 Add Event with Data for Client Blocks
Block 8000: Add Event with Data for Client
The 8000-series blocks are similar to the 2000-series Event Command blocks.
The 8000-series blocks source the command data from the processor, instead of
from the module’s database. These blocks use ‘write’ Modbus Function Codes
(5, 6, 15, 16) only.
Block 8000: Request from Processor to Module
Offset Description
0 Block ID 8000 indicates this block will add an event with data of a specific
MVI69L-MBTCP client. The last two digits indicate which Client to utilize.
Example: ‘8008’ will utilize Client 8
1 to 4 IP address for the server the message is intended. Each digit (0 to 255) of the IP
address is placed in one of the four registers
5 TCP service port the message will be use
6 Modbus node address to use with the message
7 Modbus Function Code: 5, 6, 15 or 16 only
8 Modbus address in the slave device to be associated with the command
9 Count value for operation- bit count for function 15 (1 to 800 points) and word
count for function 16 (1 to 50 words or 1 to 25 float values). For functions 5 and
6, the count is assumed to be 1.
10 to 59 Data values to be used by command
60 to 239 Spare
Block 8000: Response from Module to Processor
Offset Description
0 Block ID 8000 for event command with data request
1 The next read request block identification code
2 Error Code for request:
0=No error
-1=Client is not enabled
-3=Client is not active
-4=Client busy with previous event command
-5=Invalid Modbus command
-6=Invalid point count for command
3 to 239 Spare