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Chapter 8 Communication Functions
8-4
.
(3) 1:1 connection with other MASTER-K120S
MASTER-K120S
main unit
MASTER-K120S main unit
Pin no.
Pin assignment and direction
Pin no. Signal
1 1 5V
2 2 RXD1
3 3 TXD1
4 4 RXD2
5 5 SG
6 6 5V
7 7 TXD2
8 8 SG
9
9 SG
MASTER-K120S main unit Connection method and signal direction
MASTER-K120S main unit
485+
485+
485-
485-
RS-232C interface
Male Type
1
2
3
4
5
6
7
8
9
MASTER-K120S main unit
MASTER-K120S main unit
RS-485 interface