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7. Specifications
Cable length
Communication interface
Communication method
Communication speed
Synchronization method
Code form
Data bit/Parity
Stop bit
Communication protocol
Data format
Number of connectable
units
Error correction
Error detection
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
1.2 km (Max.), Cable resistance: Within 50
but if used, use 120
EIA RS-485
Half-duplex communication
9600, 19200, 38400 bps (Selectable by keypad)
Start-stop synchronization
ASCII, binary
Data bit: 7, 8, Parity: Even/Odd/No parity (Selectable by keypad)
1, 2 (Selectable by keypad)
MEWTOCOL/Modbus ASCII/Modbus RTU/
Modbus ASCII (KT4 command allocation)/
Modbus RTU (KT4 command allocation)
(Selectable by keypad)
Data format is different depending on the communication protocol.
MEWTOCOL
Start bit
Data bit
Yes (Even, Odd),
Parity
Stop bit
Max 31 units to 1 host computer
Command request repeat system
Parity check, BCC (MEWTOCOL), LRC (Modbus ASCII) ,
CRC-16 (Modbus RTU)
or more on both sides.)
Modbus ASCII
1
7 or 8
7 or 8
Yes (Even, Odd),
No parity
No parity
1 or 2
1 or 2
(Terminators are not necessary,
Modbus RTU
1
1
8
Yes (Even, Odd),
No parity
1 or 2
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