Product Description XI/ON - Eaton Automation

XI/ON: Gateways for Modbus TCP 6 Application example: Modbus TCP
6.3.5 Reading-out the packet process data (inputs)
Figure 55:
Packed input
process data
In order to assure a largely efficient access to the process data of a
station, the module data are consistently packed and mapped to a
coherent register area.
The packed input data can be found in registers 0×0000 to 0×01FF
of the gateway. They can be accessed via function code 03..
A
The first 9 registers (18 bytes) contain the input data of the intelligent
modules "A", followed by 1 register of digital input data "B".
130 M001973-01, 07/2007
B