SEW-Eurodrive ECDriveS ECIO-8-24-00, Руководство пользователя

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6
Startup
30
Manual
– ECDriveS® ECIO
Service Code 23 - Read/Write Multiple Registers (up to 45 registers per instruction)
When using Input and Output Assemblies with Modbus TCP PLC, it is import ant t o al-
ways use the first address shown in the assembly group as the beginning register to read
or write regardless of which register in the assembly is needed by the PLC. Trying to
access Input or Output Assemblies starting with any register in the assembly ot her t han
the first register will cause the module to return an error.
Ethernet I/P Assembly instance structure
When a ECIO module is attached to an external Ethernet I/P controller (Logix 5000 based
PLC, for example), it is done so as a Generic Ethernet I/O device.
Part of this procedure in the PLC is to instruct the Generic device as to which dat a c on-
figuration or instance of Ethernet I/P the Generic device is to use to report and respond to
data to and from the PLC.
These instances essentially group the appropriate Modbus registers into contiguous Input
and Output array image that fit into the Allen-Bradley Logix 5000 controller tags.
Profinet IO Assembly instance structure
Prior to connecting any modules to a Profinet IO capable (Siemens, for example) P LC, a
GSDXML configuration file needs to be installed in your PLC programming software (i. e.
STEP 7 or TIA Portal). The GSDXML file contains, among other things, the definit ion of
memory size required when connecting a module to a Siemens PLC with Profinet IO.
When assigning an individual module to a PLC, you decide what memory address to use.
The GSDXML file stipulates that each module requires 64 bytes of input data from the
module to the PLC and 64 bytes of output data from the PLC to the module. W hen as -
signing an individual module to a PLC, you decide what physical PLC memory address to
use as the beginning of these 64 byte blocks.
In all of the charts showing module data registers and their assigned function, for Profinet
IO these are indicated as “Byte 0, Byte 1,...Byte 32”, etc. These are offsets from the
starting address in the Siemens PLC memory assigned by the Siemens programming
software when the module was installed into the network. For example, if a module’s
inputs are installed beginning at %IB256, then from our charts, the data for “By te 6 an d
Byte 7” would be at addresses %IB262 and %IB263 respectively.
6.2.2 Configuration Assembly
The configuration data is sent from the controller to the module upon initial connection in
order to set optional module operational parameters.
This chart shows the data sent to the PLC from the module when connected. A ll regis-
ters in the module are 16-bit integer data type.