ProSoft Technology MVI46-MCM - Manual (Page 20)

Configuring the MVI46-MCM Module MVI46-MCM ♦ SLC Platform
User Manual Modbus Communication Module
Page 20 of 108 ProSoft Technology, Inc.
March 29, 2011
File M0 Offset Register Content Description
N10:27 28 5027 Output Offset This parameter specifies the offset address in the
internal Modbus database for network requests for
Modbus function 1, 5, or 15 commands. For
example, if the value is set to 100, an address
request of 0 will return the value at register 100 in
the database.
N10:28 29 5028 Holding Register
Offset
This parameter specifies the offset address in the
internal Modbus database for network requests for
Modbus 3, 6, or 16 commands. For example, if the
value is set to 50, an address request of 0 will
return the value at register 50 in the database.
N10:29 30 5029 Command Count This parameter specifies the number of commands
to be processed for the port. Enter a value of 0 to
100.
N10:30 31 5030 Minimum Command
Delay
This parameter specifies the number of
milliseconds to wait between the initial issuance of
a command. This parameter can be used to delay
all commands sent to slaves to avoid "flooding"
commands on the network. This parameter does
not affect retries of a command as they will be
issued when failure is recognized. Enter a value in
the range of 0 to 65535.
N10:31 32 5031 Command Error
Pointer
This parameter sets the address in the internal
Modbus database where the command error data
will be placed. If the value is set to -1, the data will
not be transferred to the database. Enter a value of
0 to 4999.
N10:32 33 5032 Response Timeout This parameter represents the message response
timeout period in 1 ms increments. This is the time
that a port configured as a master will wait before
re-transmitting a command if no response is
received from the addressed slave. The value is set
depending on to communication network used and
the expected response time of the slowest device
on the network.
N10:33 34 5033 Retry Count This parameter specifies the number of times a
command will be retried if it fails. Enter a value in
the range of 0 to 10.
N10:34 35 5034 Error Delay Count This parameter specifies the number of polls to be
skipped on the slave before trying to re-establish
communications. After the slave fails to respond,
the master will skip commands to be sent to the
slave the number of times entered in the
parameter. Enter a value in the range of 0 to
65535.
N10:35 36 5035 Reserved
N10:36 37 5036 Use Guard Band
Timer Use packet gap timeout for messages (Yes or No).
Use only in multi-drop applications.
N10:37 38 5037 Guard Band Timeout A value of 0 uses the default baud rate or you can
set a value in milliseconds (0 to 65535)
N10:38 39 5038 Spare
N10:39 40 5039 Spare