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SIO Isolator RCB-ISL-SIO
Operation Manual First Edition
Thank you very much for purchasing our product.
Make sure to read this Operation Manua l to ensure cor re ct use fo r saf ety.
1. Scope
The RC-SIO isolator is used to isolate the SIO (RS485) communication line
between the controllers.
There are the cases such that the distance to the control box is long, or the
communication ground (0V) line is not shared because both the DC24 type
controllers and AC100V/200V type controllers are used. In such cases, by means
of isolating the communication line using this RC-SIO isolator, the power can be
supplied to each of the controllers independently.
The controllers connectable to this product are as follows.
・PCON-C/CG,CY,SE,CF ・ERC2,ERC2-SE
・ACON-C/CG,CY,SE, ・SCON
・RCP2 ・Gateway Unit
・ROBONET
2. Specifications
Item Specifications Remarks
Power supply DC5V
Number of
connectable
2 per SIO module
controllers
Surrounding air
temperature
Surrounding
humidity
Surrounding
environment
Isolation
resistance
Isolation
strength
0 to 40℃
95%RH or less (non-condensing)
There should be no corrosive gas, flammable
gas, oil mist and/or dust.
10MΩ
or more at DC500V
DC60V continuous
Protection class IP20
Weight Approx. 40g
External
dimensions
Mounting
method
25W×126.5H×37D mm
35mmDIN rail
・Terminal Resistance
Accessories
(220Ω,1/4W, with a e-Con connector) 1unit
・e-Con connector 1unit
Supplied from the axis 1
controller
・Between the e-Con
connector and modular
connector
・Between the modular
connector axis 1 and
the axis 2
3. Names and Functions of Each Section
Name Functions
communication line (RS485)
with the host or linking the
connectors when two or more
connectors are used.
through CN1 (supplied from
the axis 1 controller), it is
turned ON in green. However,
in the case that the
communication speed is slow,
it flashes. When the power is
not supplied, it is turned OFF.
transmission from the
controller side to the host side.
When the data transmission is
stopped, it is turned OFF.
receipt in the1st/2nd controller
from the host side. It is turned
ON in green during data
receipt operation. When the
data receipt is stopped, it is
turned OFF.
Module Connector
CN1
Module Connector
CN2
Connector for connecting the
communication line for the axis
1 controller
Connector for connecting the
communication line for the axis
2 controller
axis 1
6-pole
Module Connector
axis 2
6-pole
Module Connector
e-Con Connecto
(Left) CN3
(Right) CN4
① e-Con Connector Connector for connecting the
② POWER LED When the 5V power is supplied
③ SD LED It flashes during the data
④ RD1/RD2 LED It is displayed when the data
⑤ axis 1 6-pole
⑥ axis 2 6-pole
4. External Dimensions
Isolator Link Cable
5. Inner Block Diagram
The communication line (RS485) on the host side is isolated from the
communication line (RS485) on the controller side using the signal isolation IC.
The power to the circuit for the signal isolation IC on the host side is supplied
from the axis 1 controller power unit. Therefore, make sure to connect CN1.
Connect the RCP2 controller to the axis 2 controller (CN2). It can not be connected to the axis
1 controller (CN1).
Host side
CAUTION
Link Connection
(To the next isolator)
SIO Isolator
Signal
isolation
IC
Power
isolation
IC
Signal
isolation
IC
(axis 1)
(axis 2)
6. Connection Example
(1) Connection Example 1: In the case that the controller is connected to the host PC through
In the case that the 0V line for the power to each controller can not be shared, or the
DC24V type controllers are used together with the AC100/200V controllers, the power
source can be separated for each controller as shown in the figure.
Personal Computer
the SIO link :
SIO Isolator
SIO Isolator
SIO Isolator
Terminal Resistance
Controller
Cable Name Model Remarks
① USB Cable
② Isolator
③ Isolator Link Cable CB-ISL-SIO Preparation separately
④ External Machine
CAUTION
1.PC software can not be used with this connection example.
2.Because the power to the primary circuit inside the SIO isolator is supplied from CN1, make sure
to connect CN1.
(2) Connection Example 2: In the case that the connector is connected to the host PC or PLC
In the case that the 0V line for the power to each controller can not be shared, or the
DC24V type controllers are used together with the AC100/200V controllers, the power
source can be separated for each controller as shown in the figure .
RS232C conversion unit
(RCB-CV-MW)
Cable
+24V
24V Power-
supply
PS1
Conversion
USB
Adaptor
Communication
Cable
Communication
Cable
(Note)They can not be connected
at the same time.
Either of the two lines
should be connected.
+24V
24V Power-
supply
PS2
0V
+24V
0V
24V Power-
supply
PS3
0V
CB-SEL-USB
RCB-CV-USB
CB-RCB-SIO Preparation separately
CB-RCA-SIO PC Software accessories
through the SIO converter :
RS232C Cross Cable
(goods on the market.)
0V
+24V
24V Power-
supply
PS4
(In case of SCON)
Single-phase
PC Software RCM-101-USB
Accessories
Horizontal
Vertical
SIO Converter
24V Power-
supply
PS1
(This terminal can not be used with this
e-Con
connector
+24V0V
Isolator Link Cable
EQPPGEVKQPGZCORNG
SIO Isolator
Isolator Link Cable
External machine
communication
cable
SIO Isolator
Terminal Resistance
+24V
24V Power-
supply
PS2
Controller
0V
+24V
24V Power-
supply
PS3
0V
+24V
Controller
0V
24V Power-
supply
PS4
(In case of SCON)
Single-phase
CAUTION
Because the power to the primary circuit inside the SIO isolator is supplied from CN1, make
sure to connect CN1.
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(3)
Connection Example 3: In the case of the link connection through the gateway unit:
In the case that the 0V line for the power to each controller can not be shared, or the
DC24V type controllers are used together with the AC100/200V controllers, the power
source can be separated for each controller as shown in the figure.
Master Unit
Gateway unit
Made by the client
e-Con
Connector
24V Power-
supply
PS1
+24V0V
Isolator Link Cable
External machine
communication
cable
SIO IsolatorSIO Isolator
Terminal Resistor
+24V
24V Power-
supply
PS2
0V
Controller
+24V
24V Power-
supply
PS3
0V
+24V
0V
24V Power-
supply
PS4
Controller
(In case of SCON)
Single-phase
CAUTION
Because the power to the primary circuit inside the SIO isolator is supplied from CN1, make
sure to connect CN1.
(4) Connection Example 4: In the case that the PC is connected while the positive side of the
Inside the most PCs, the GND (0V) line for the communication is short-circuited to FG
(frame ground), when the PC is connected, a short-circuit occurs in the 24V power line
which might cause the PC breakdown. In such case, connect the controller (including the
gateway and ROBONET) using the SIO isolator and USB conversion adaptor
(RCB-CV-USB) as shown in the figure.
24V power is grounded:
Personal Computer
SIO Isolator
Terminal Resistance
SIO connector
Required Cables
USB Cable CB-SEL-USB
USB Conversion Adaptor RCB-CV-USB
(attachment to the PC application software RCB-CV-USB)
Isolator Communication Cable CB-RCB-SIO
External Machine Communication Cable CB-RCA-SIO
□□□
□□□
24V
Power-
supply
+24V
0V
CAUTION
1. The RS232C conversion unit RCB-CV-MW (attachment to the PC application software
RCM-101-MW) can not be used for the connection between the PC and SIO isolator.
2. Connect the external machine communication cable (3) to CN1 for the SIO isolator.