Rs485 Communication - LG MASTER-K10S1 User Manual

Programmable logic controller
Table of Contents
■ ■ ■ ■ RS485 COMMUNICATION
• General Specification
Instruction for RS485
Communication Method
Max. Linkable station number
Transmission speed
Transmission distance
Preset of waiting time
for Time Out Error
• Network System
Master PLC
Station no.
h1F
RS485 port
+
-
SEND / RECV
Above instruction is used in sequence program of only
master PLC being designated as station no. h1F.
Asynchronous half duplex
32 stations(including self station)
300 ~ 19200bps(selectable)
Max. 1km(no repeater)
Preset address = D060
Preset value(x 10ms) = 0 ~ 255 (0ms ~ 2550ms)
(Default preset value = 0(500ms),
if preset value is equal or more than 255, waiting
time is 2550ms.)
max. 32 stations
Slave PLC1
Slave PLC2
Station no.
Station no.
h00
RS485 port
RS485 port
+
-
+
h01
. . . . . .
-
MASTER-K10S1
Slave PLC30
Station no.
h1E
RS485 port
+
-
10
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