6 Parameter Settings and Functions 
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6.6  Communication Settings 
  This feature is used for external higher systems (PC, GP, etc.) to set the controller's 
parameters and to monitor the controller. It can also be used to transmit data to 
external devices.   
  No redundant unit addresses may exist along the same communication line. The 
communication cable must be a twist pair that supports RS485.   
Interface   
Category  Description 
Standards  EIA RS485-compliant 
Max. Connections  31 units (Addresses: 01 through 99) 
Communication  Two-wire, half duplex 
Synchronization  Asynchronous 
Valid Communication 
Distance 
Max. 800 m 
BPS (Bits Per Second)  2400, 4800, 9600, 19200, 38400 bps 
Response Standby  5 ms to 99 ms 
Communication Start Bit  1 bit (fixed) 
Data Bit  8 bit (fixed) 
Communication Parity Bit  None, Even, Odd 
Communication Stop Bit  1, 2 bit 
Protocol 
Modbus Remote Terminal Unit (★
1
 Character = 11 bit as fixed) 
 
 
You could modify the parameter (first in, first out) using keys during 
communication connection, but this may lead to errors and malfunctions. 
6.6.1  Unit Address Settings [PAR4 → ADRS] 
You can assign individual addresses to data units. 
Setting 
Group 
Parameter  Setting Range 
Factory 
Default 
Unit 
to
-