Rtb Terminal Block; Pin Description - Hitachi HX-RIO3 Series User Manual

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4.5. RTB Terminal Block

4.6. 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 pins and 2 field power pins.
Pin No. Signal Description
0 System Power, 24V
2 System Power, 24V
4 F.G
6 Field Power, Ground
8 Field Power, 24V
- System Power: The power for starting up CPU.
- Field Power: The power for input and output line.
Do not use an incorrect voltage/frequency!
The use of an incorrect supply voltage or frequency
can cause severe damage to the component.
No. Name
1 System Vcc
2 System GND
3 Token Output
4 Serial Output
5 Serial Input
6 Reserved
7 Field GND
8 Field Vcc
Do not touch data and field power pins in order to
avoid soiling and damage by ESD noise.
To prevent ESD noise, it is recommended to use
the END module.
Signal Description
System Power, Ground 1
System Power, Ground 3
F.G
Field Power, Ground
Field Power, 24V
Description
System supply voltage (5V dc).
System Ground.
Token output port of Processor module.
Transmitter output port of Processor module.
Receiver input port of Processor module.
Reserved for bypass Token.
Field Ground.
Field supply voltage (24Vdc).
HX-RIO3 Series
Pin No.
5
7
9