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
-
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