Hitachi SJ300 Series Settings, Parameter, Serial Network, Item, Code, Value, Function, Description

B–4

Introduction

Serial Network

Parameter

Settings

Appendix B

Several parameter settings are necessary to configure serial communications, listed below.

Function	Item	Value	Description
Code
		02	Digital operator
C070	Data command source	03	RS485 connector
		04	Expansion card #1
		05	Expansion card #2
		02	Loop-back test
		03	2400 bps
C071	Baud rate	04	4800 bps
		05	9600 bps
		06	19200 bps
		1 to 32,	1 to 32 – Node or station address (unique
		FF	to each inverter or device)
C072	Node address		FF – Automatic broadcast (to all nodes on
			transmit, allowed only on certain
			commands (refer to each command
			description in this appendix)
C073	Data bits	07	7 bits
		08	8 bits
		00	none
C074	Parity	01	Even parity
		02	Odd parity
C075	Stop bits	01	1 bit
		02	2 bits
C078	Wait time	0 to 1000	0 to 1000 ms time that the inverter waits
			to respond to network master

For inverters on the same network, some settings must match from inverter to inverter. These include:

•Baud rate

•Data bits

•Parity

•Stop bits

However, the node address on each inverter must be unique, used only once on the network.