Lenze I/O system 1000 - 10.2 Access to the I;O system 1000

Lenze · I/O system 1000 · Reference Manual · DMS 5.0 EN · 09/2016 · TD17 572
10 Modbus TCP communication
10.2 Access to the I/O system 1000
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
10.2 Access to the I/O system 1000
In the following, access under Modbus TCP to the following areas of the I/O system are displayed:
•I/O area
• Parameter data
•Diagnostic data
Information on how to assign the ranges can be found in the descriptions of the corresponding I/O
compound module.
Addressing
In order that the plugged-in I/O compound modules can be addressed individually, specific
addresses in the bus coupler must be assigned to them. The Modbus TCP bus coupler module
provides an address range of 1024 bytes for input and output, respectively.
Address allocation (also called mapping) takes place automatically and cannot be influenced. The
mapping can be output via the web page of the bus coupler.
During acceleration, the bus coupler automatically allocates addresses for its I/O compound
modules according to the following rules:
• As of address 0, all modules are mapped from the left (bus coupler) to the right in ascending
order.
• It is distinguished between input and output range (if, for instance, a module has input and
output data, they can be filed on different addresses).
There is no distinction made between digital and analog data. The Modbus TCP bus coupler
generates one coherent area for input and output data, respectively, from all modules.
 Note!
Please note that the supply and terminal modules do not have any type identification.
They cannot be identified by the bus coupler and are thus not considered in the listing or
assignment of the slots.
In the following, slots within Modbus TCP will be referred to as Modbus TCP slots.
Counting always starts at 0.
 Note!
A description of the input and output ranges assigned to a module can be found in the
"Product description" chapter in the respective module description.
Please observe that modules assigning more than 1 byte such as analog modules are
stored from of a straight address onwards. Otherwise word access errors will be caused
for Modbus TCP.