Enable, Internal address, Poll interval – ProSoft Technology MVI71-MNET User Manual
Page 34: Reg count
MVI71-MNET ♦ PLC Platform
Module Configuration
Modbus TCP/IP Interface Module
User Manual
Page 34 of 109
ProSoft Technology, Inc.
June 23, 2009
Enable
0, 1, 2
This field defines whether or not the command is to be executed and under what
conditions.
Value Description
0
The command is disabled and will not be executed in the normal polling sequence.
1
The command is executed each scan of the command list if the Poll Interval Time is
set to zero. If the Poll Interval time is set, the command will be executed, when the
interval timer expires.
2
The command will execute only if the internal data associated with the command
changes. This value is valid only for write commands.
Internal Address
0 to 4999
or
0 to 9999
This field specifies the database address in the module's internal database to
associate with the command. The database address is interpreted as bit-
addressing or word-addressing, depending on the Modbus function.
For Modbus functions 1, 2, 5, and 15, this parameter is interpreted as bit-
addressing.
For Modbus functions 3, 4, 6, and 16, this parameter is interpreted as word-
addressing.
If the command is a read function, the data received in the response message is
placed at the specified location.
If the command is write function, data used in the command is sourced from the
specified data area.
Poll Interval
0 to 65535
This parameter specifies the minimum interval to execute continuous commands
(Enable code of 1). The parameter is entered in tenths of a second. Therefore, if
a value of 100 is entered for a command, the command executes no more
frequently than every 10 seconds.
Reg Count
Regs: 1 to 125
Coils: 1 to 800
This parameter specifies the number of registers or digital points to be
associated with the command.
Functions 5 and 6 ignore this field as they only apply to a single data point.
For functions 1, 2, and 15, this parameter sets the number of digital points
(inputs or coils) to be associated with the command.
For functions 3, 4, and 16, this parameter sets the number of registers to be
associated with the command.