4-1-2
General purpose communication port
①
Port 2 (general-purpose serial communication port)
RS-485 (two-wire, half-duplex communication) for general purpose communication and pin assignment and
specifications of port 2 are as follows.
Port 3
P
i
n
Description
＋
－
LG
Data A
Incoming
and
outgoing
connections (+)
Data B
Incoming
and
outgoing
connections (-)
LogicGND
0 V for power and signals
I t e m
Performance
Remarks
Signaling
levels
RS-485 compliant
Transmissio
n rate
2400,4800,9600,19200, 38400 bps
Set to special register
Transmissio
n distance
Within the 1000 m
When power is not supplied from
the CPU
Connecting
3-wire, non-insulated
When shipped, with connection
connector
Protocol
DirectNET
Modbus/
RTU
K sequence
No
procedure
M-NET
For the automatic switching
function at the time of reception
Non-procedural communication or
M-NET is supported.
Data format
HEX,
ASCII
HEX
HEX
ASCII
ASCII
Data length
8 bits
8 bits
8 bits
7,8 bits
7 bits
Stop
1,2 bits
1,2 bits
1,2 bits
1,2 bits
1 bit
Parity
Odd even
None
Odd even
None
Odd even
None
Odd even
None
Even-numb
ered
Area code
1
～
90
1
～
247
1
～
90
61,62,6B,
70(HEX)
Master:0
Slave:1
～
7
Serial
number
The following shows the specifications of the LED for communication port communication status display mounted on the
front panel of the CPU.
Indication
Condition
Meaning
Control
TX
Green
flashing
Transmitting
H/W
OFF
Not sent
H/W
RX
Green
flashing
Receiving
H/W
OFF
Not received
H/W
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
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Page 13: ...1...
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Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
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Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
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Page 310: ...Chapter 7 Maintenance...
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