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Chapter 8 Communication Functions
8-3
(2) 1:1 connection with a monitoring device like PMU
PMU
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
PMU Connection method and signal direction MASTER-K120S main unit
485+
485+
485-
485-
1
2
3
4
5
6
7
8
9
PMU(LGIS)
RS-232C interface
Female Type
MASTER-K120S main unit
RS-485 interface