Setting Functions
3
KAS/KAS-R series, -LRs/-LRs4 option
3
Setting Functions
3-1
Communication Protocol
Baud rate
Asynchronous 9,600 [bps] (Fixed)
Character length
8 [bits]
Stop bit
1 [bit]
Parity
None
Flow control
None
The delimiter is CR (0D
H
) and fixed.
*
For -LRs4 option, it will be a two-wire transmission (half-duplex).
3-2
Communication Option Connector Pin Assignment
3-2-1
-LRs option
(1) TxD (Transmission)
(5) NC
(2) RxD (Reception)
(6) NC
(3) GND
(7) GND
(4) NC
(8) GND
3-2-2
-LRs4 option
(1) TxD (+)/RxD (+)
(5) TxD (+)/RxD (+)
(2) TxD (-)/RxD (-)
(6) TxD (-)/RxD (-)
(3) GND
(7) GND
(4) Termination resistor ON/OFF
(8) GND
3-2-3
Termination Resistor (for -LRs4 option)
A termination resistor for RS-485 is available by shorting between pin (4) and pin (8) of the
communication option connector. When they are not shorted, there is no termination resistor.
Set the termination resistor if necessary.
Example of termination resistor setting:
Set the termination resistor to the first and end connection devices of the RS-485 connection.
Do not set it to any other devices.
(1) (2) (3) (4)
(5) (6) (7) (8)
TxD (+)/RxD (+)
TxD (-)/RxD (-)
Device
Device
Device
Device
Termination resistor: Presence
Termination resistor: Presence
Termination resistor: Absence
*
Do not connect anything to NC.
