Mbtcp Client X Commands - ProSoft Technology MVI69E-MBTCP User Manual

MVI69E-MBTCP ♦ CompactLogix Platform
Modbus TCP/IP Enhanced Communication Module
Float Start
Float Offset
ARP Timeout
Command Error Delay
MBAP Port Override

3.2.4 MBTCP Client x Commands

In order to interface the MVI69E-MBTCP module with Modbus server devices,
you must create a command list. The commands in the list specify the server
device to be addressed, the function to be performed (read or write), the data
area in the device to interface with, and the registers in the internal database to
be associated with the device data.
Each of the 20 Client Command Lists supports up to 16 commands each. The
command list is processed from top (Command #0) to bottom.
Read commands are executed without condition. You can set write commands to
execute only if the data in the write command changes (Conditional Enable). If
the register data values in the command have not changed since the command
was last issued, the command is not executed. You can use this feature to
optimize network performance.
Note: The first command in the Client x Command list cannot be disabled.
The MBTCP Modbus client (and server) communication drivers support several
data read and write commands. When you configure a command, you need to
consider the type of data (bit, 16-bit integer, 32-bit float, etc), and the level of
Modbus support in the server equipment.
ProSoft Technology, Inc.
June 28, 2017
0 to 65535
Specifies the first register of floating-point data. All requests with
register values greater-than or equal to this value are considered
floating-point data requests. This parameter is only used if the
Float Flag is enabled.
0 to 9999
Specifies the start register for floating-point data in the internal
database. This parameter is used only if the Float Flag is
enabled.
1 to 60 Specifies the number of seconds to wait for an ARP reply after a
seconds request is issued. If the value is out of range, the module uses
the default value of 5.
0 to 300
Specifies the number of 100 millisecond intervals to turn off a
command in the error list after an error is recognized for the
command. If you set this parameter to 0, there is no delay.
Yes or No Override default port settings.
N = Use standard server Port 502 with MBAP format
O
messages. All other server Port values use encapsulated
Modbus message format (RTU via TCP).
Y = Use MBAP format messages for all server Port values.
ES
RTU via TCP is not used.
Configuring the MVI69E-MBTCP Using PCB
User Manual
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