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HRX-OM-S010
Chapter 3 Serial communication
3.3
Connected explanation
HRS100/150 Series
3-2
3.3 Connected explanation
Fig 3.3-1 shows the wiring when RS-485 is selected as the communication
standard. Fig shows the wiring when RS-232C is selected.
A communication cable that connects the product and customer system is
not included with the product. Prepare a cable, referring to Fig 3.3-1 or Fig.
Fig 3.3-1
RS-485 connector connection
【
Tips
】
・
1 master : 1 product, or 1 master: N products.
In the latter case, up to 31 products can be connected.
・
Both ends of the communication connection (the end nodes) need to be
connected to the higher level computer.
・
The terminal resistance of this product can be set by the operation display
panel. Refer to
‘’4.3.2 Setting and checking’’,’’5.3.2 Setting and checking’’.
Fig 3.3-2
RS-232C connector connection
1
SD+
5
SG
9
SD-
SD+
SD-
SG
Terminal
resistance
Master
This product
(first slave)
1
SD+
5
SG
9
SD-
This product
(
second slave
)
1
SD+
5
SG
9
SD-
This product
(
31
st
slaves
)
Terminal
resistance120
Ω
2
3
5
R D
S D
S G
2
3
5
R D
S D
S G
Master
This product
Do not connect any wire to other PIN numbers.
Do not connect any wire to other PIN numbers.