Bus Pin Description - Hitachi HX-RIO3 Series User Manual

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6 G-Bus Pin Description
Communication between the Network Adapter and the expansion module as well as system / field power
supply of the bus modules is carried out via the internal bus. It is comprised of 6 data pin and 2 field power
pin.
*Please refer to the table below regarding the pin description from P1 to P8.
Do not touch data and field power pins in order to avoid soiling and damage by ESD
noise.
No. Description
P1 System Power (VCC)
P2 System Power (GND)
P3 GBUS TX +
P4 GBUS TX -
P5 GBUS RX +
P6 GBUS RX -
P7 Field Power (GND)
P8 Field Power (VCC)
HX-RIO3 Series