54
Timeout Action
Select an action from the drop down menu:
“None” ..................................No effect. The inverter will continue to operate with the last available
settings.
“Apply Fail-safe Values” .......Apply the fail-safe values as described in section 5.4.1.
“Fault Drive” .........................The behavior will depend on the timeout conditions set by the inverter
(function codes o27 and o28), which may result in an Er5 fault. Refer to
section 3.2.
Enable Drive Fault Reset
This will clear the Er5 fault once communication is re-established. This option is only available if the
Timeout Action
is set to “Fault Drive”.
9.1.5 Node Settings
There are no node settings. A node is simply a container for objects.
9.1.6 Holding/Input Register Remap Settings
In the studio’s
Project
panel, add
OPC-PRT…Ethernet…Modbus/TCP Server…Node…Holding/Input
Register Remap
.
The holding/input register remap objects are
OPTIONAL
. By default, all inverter function codes are
already mapped as both holding (4X) and input (3X) registers (refer to section 9.1.2). For user
convenience, register remap objects can be created to map any inverter function code to holding/input
register 5001 to 5050.
At times, it may be convenient to access inverter function codes in bulk Modbus transactions. This may
be especially true in situations where it is desired to access certain function codes that are non-
contiguous. For example, if it were desired to read the inverter’s output frequency (function code M09,
register 2058), operation status (function code M14, register 2063), and Life of cooling fan (function code
M48, register 2097), this could be accomplished in two different ways:
1.
Implement three separate Modbus read transactions, each one reading one register only, or
2.
Implement one single Modbus read transaction, starting at register 2058 for a quantity of 40
registers. Then, pick out the registers of interest and ignore the rest of the response data.
While both of these methods will certainly work, neither one of them is optimized for the task at hand,
which is to access three specific register values. A fully optimized solution can be realized by making
use of the register remap objects. Non-contiguous inverter function codes can be grouped together in
any order and accessed efficiently via the Modbus/TCP “read multiple registers” and “write multiple
registers” function codes. The net effect is one of being able to transfer larger blocks of registers using
fewer Modbus transactions, which results in improved network utilization and simpler data manipulation
code on the Modbus master device.
Description
This 32-character (max) field is strictly for user reference: it is not used at any time by the driver.
Remap Register
Remap register that maps to the specified inverter function code. Select from 5001 to 5050.
Function Code
Function code (refer to section 4) that is accessed by the
Remap Register
.
Data Type
Fixed to 16-Bit Unsigned. This is equivalent to two bytes.
