Lenze I/O system 1000 System Manual - Manual (Page 716)

Modbus TCP Kommunikation
Access to the I/O system 1000
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716 EDSIO1000 EN 7.0
13.2 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:
ƒ I/O range
ƒ Parameter data
ƒ Diagnostic data
Information on how to assign the ranges can be found in the descriptions of the
corresponding I/O compound module.
)
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.
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:
ƒ As of address 0, all modules are mapped from the left (bus coupler) to the right in
ascending order.
ƒ 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).
ƒ 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!
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.