ProSoft Technology MVI69L-MBTCP - Manual (Page 56)

MVI69L-MBTCP Configuration MVI69L-MBTCP ♦ CompactLogix Platform
User Manual Communication Module
Page 56 of 152 ProSoft Technology, Inc.
January 6, 2014
Read Register Start and Read Register Count
parameters in the Module section.
If the command is a write function, the data to be
written to the server device will be sourced beginning
from the module’s internal database register specified.
This register value must come from the Write Data
area of the module’s memory, defined by the Write
Register Start and Write Register Count parameters in
the Module section.
Poll Interval 0 to 65535 seconds Specifies the minimum interval between executions of
continuous commands (Enable code = 1).
Example: If a value of 10 is entered, the command will
execute no more frequently than once every 10
seconds. When the command reaches the top of the
command queue and 10 seconds has not elapsed, it is
skipped until the poll interval has expired.
Register Count 1 to 125 (words)
or
1 to 800 (coils)
Specifies the number of registers or digital points to be
associated with the command. Modbus Function
Codes 5 and 6 ignore this field as they only apply to a
single data point.
For Modbus Function Codes 1, 2 and 15, this
parameter sets the number of single bit digital points
(inputs or coils) to be associated with the command.
For Modbus Function Codes 3, 4 and 16, this
parameter sets the number of 16-bit registers to be
associated with the command.
Swap Code No Change,
Word Swap,
Word and Byte Swap,
Byte Swap
Defines if the data received from the Modbus server is
to be ordered differently than received from the server
device. This parameter is helpful when dealing with
floating-point or other multi-register values, as there is
no standard method of storage of these data types in
server devices. This parameter can be set to order the
register data received in an order useful by other
applications.
No Change = No change is made in the byte ordering
(ABCD = ABCD)
Word Swap = The words are swapped (ABCD=
CDAB)
Word and Byte Swap = The words are swapped, then
the bytes in each word are swapped (ABCD=DCBA)
Byte Swap = The bytes in each word are swapped
(ABCD=BADC)
Note: Each pair of characters is a byte. Ex: AB and
CD. Two pairs of characters is 16-bit register Ex:
ABCD.
Node IP
Address xxx.xxx.xxx.xxx Specifies the IP address of the target device being
addressed by the command.
Service Port 1 to 9999 Use a value of 502 when addressing Modbus TCP/IP
servers which are compatible with the Schneider
Electric MBAP specifications (this will be most
devices).
If a server implementation supports another service
port, enter the value here. Service Port 2000 is