Operation
Fieldgate FXA42
78
Hauser
Read illegal floating point value from RTU device <device address> (function code:
<function code>, address: <value address>, quantity: <quantity>)
The driver read an illegal floating point value from the Modbus RTU slave with the address
indicated. This value is identified by the Modbus function code used to read it, its address
(starting from 0) and the quantity of registers or coils.
Portal communication error <error code>
A general error has occurred while exchanging data with the port. Possible error codes:
Error code
Description
-10
Out of memory
-12
Internal data queue overflow: data was produced faster than it could be processed.
Contact customer support if an error code is displayed that is not listed here.
8.4.7
Modbus server/slave
The Modbus server/slave can be configured on this page.
Values
This page displays a list of Modbus values. Settings (input or output) can be added, edited,
deleted or cloned via the buttons below the list. For each value the list shows a name, the
communication parameters and an index. The name can be freely defined and is shown on
the portal, for example. The indexes are used internally to address the values.
When you add or edit a value, a dialog will appear. The following parameters can be
configured here:
Parameters Description
Name
The value's name
Function
Modbus function code used to read or write the value.
The function code also defines whether the value is interpreted as an input or output.
Start address Register or coil address to start reading or writing.
Addresses start with 0.
