Rs232 Port For Modbus/Rtu, Touch Panel Or Ioguide; I/O Process Image Map - Hitachi HX-RIO3 Series User Manual
Profibus network adapter
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Also See for HX-RIO3 Series:
- Manual (68 pages) ,
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- User manual (63 pages)
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3.4.3. RS232 Port for MODBUS/RTU, Touch Panel or IOGuide
3.5. I/O Process Image Map
An expansion module may have 3 types of data as I/O data, configuration parameter and memory register.
The data exchange between network adapter and expansion modules is done via an I/O process image data
by HX-RIO3 Series Internal Bus protocol. The following figure shows the data flow of process image between
network adapter and expansion modules.
Pin#
Signal Name
1
Reserved
2
TXD
3
RXD
4
GND
HX-RIO3 Series
Description
----
RS232 TXD
RS232 RXD
RS232 GND
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