ProSoft Technology MVI46-MBP - Manual (Page 72)

MVI46-MBP ♦ SLC Platform Reference
Modbus Plus Communication Module
Page 72 of 101 ProSoft Technology, Inc.
February 19, 2008
DB
Address Modbus
Address Parameter Description
4455 44456 Device Type This parameter is ignored in the current version of
the software. It may be required in future releases
to customize communication for non-compliant
devices.
4456 44457 Global In Length This parameter sets the length of global data
accepted from the specified node. If a value of
zero is entered, no global data will be accepted
from this node. A value of 1 to 32 indicate that
global data is to be expected from the module and
the length of data to accept is set in this
parameter.
4457 44458 Global In Storage
Address
This parameter specifies the starting address in
the module's database where the received global
data will be placed. Valid locations are from 0 to
3999.
4458 44459 Spare Not used
4459 44460 Spare Not used
Master Command List
The next data set present in the module's database is the master command list.
Each command requires a block of ten registers in the database to describe the
command. There are 200 commands that can be defined in the module.
Therefore, this data occupies 2000 registers. The starting locations for the
commands is shown in the following table:
DB
Address Modbus
Address Parameter Description
5090 45091 Cmd # 0 Start of command block for command # 0
5100 45101 Cmd # 1 Start of command block for command # 1
5110 45111 Cmd # 2 Start of command block for command # 2
5120 45121 Cmd # 3 Start of command block for command # 3
5130 45131 Cmd # 4 Start of command block for command # 4
5140 45141 Cmd # 5 Start of command block for command # 5
- -
7060 47061 Cmd # 197 Start of command block for command # 197
7070 47071 Cmd # 198 Start of command block for command # 198
7080 47081 Cmd # 199 Start of command block for command # 199
The data structure associated with each command block is described in the
following table: