Hitachi HX-RIO3 Series User Manual page 61

61
6 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.
Do not touch data and field power pins in order to avoid soiling and damage by ESD
noise.
*Please refer to the table below regarding the pin description from P1 to
P8.
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