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5. Installation
5.1 Installed with DIN Rail
Install the multi-drop connection module with its hook (1 place) using the DIN rail.
• Applicable DIN rail DIN46277 (width: 35mm)
(Install the DIN rail with screws at intervals of 150mm.)
5.2 Directly Installed to Panel
Install the multi-drop connection module to the panel using φ4.5mm holes (2 places).
5.3 Caution for compliance with EMC Directive
Programmable logic controllers are open-type devices that must be installed and used within conductive control boxes. Please use the Multi-Drop Connection Unit while
installed in conductive shielded control boxes. Please secure the control box lid to the control box (for conduction). Installation within a control box greatly affects the safety of
the system and aids in shielding noise from the Multi-Drop Connection Unit.
6. Wiring
6.1 Power Supply Wiring
Connect the power supply cable with connectors (included) and the 24VDC terminal of the external power supply.
6.2 Wiring and Terminating Resistor Setting
6.2.1
For 1 pair wiring
Make sure to ground a twisted pair cable by applying Class D Grounding (100Ω or less).
Multi-drop
GOT side
PLC
connection module
Signal
Signal name
Cable for GT11
name
SDA
SDA
SDB
SDB
RDA
RDA
RDB
RDB
*1
Terminating
SG
SG
resistor
RSA
110
Class D
Grounding
RSB
CSA
CSB
*1 The terminating resistor 110Ω is built in the multi-drop connection module and GOT (GT10,GT11).
Make sure to set the terminating resistor to both ends of the line.
For GT15 or GT16, external wiring is required. Set the terminating resistor of the GOT that is not at the end of the line to "OPEN".
Red+
Black-
Green Ground
GOT side
GOT side
Signal
Signal
name
name
SDA
SDA
SDB
SDB
RDA
RDA
RDB
RDB
*1
Terminating
SG
SG
resistor
RSA
RSA
110
Class D
Class D
Grounding
RSB
Grounding
RSB
CSA
CSA
CSB
CSB
6.2.2
For 2 pair wiring
Make sure to ground a twisted pair cable by applying Class D Grounding (100Ω or less).
Multi-drop
GOT side
PLC
connection module
Signal
Signal name
name
Cable for GT11
SDA
SDA
SDB
SDB
*1
Terminating
RDA
RDA
resistor
330
RDB
RDB
*1
Terminating
SG
SG
resistor
330
RSA
Class D
RSB
Grounding
CSA
CSB
*1 The terminating resistor 330Ω is built in the multi-drop connection module and GOT (GT10,GT11).
Make sure to set the terminating resistor to both ends of the line.
For GT15 or GT16, external wiring is required. Set the terminating resistor of the GOT that is not at the end of the line to "OPEN".
7. Troubleshooting
In the case where ERROR LED is lit or blinking, check the following items.
Status of ERROR LED
Check the following items.
• Check if the power supply status is normal or not.
• Check the wiring of the connection cable.
Lit in red
• Install the correct communication driver.
• Check if the communication interface to which the cable is connected is correct or not.
• Check the setting of the RS-422/RS-232 selector switch.
Check the following items.
• Check that the Mode selection switch is set to the right.
Blinking in red
• The OS may be faulty. Install the standard OS and communication driver from GT Designer2 or GT Designer3 to the multi-drop
module again.
GOT side
GOT side
Signal
Signal
name
name
SDA
SDA
*1
SDB
SDB
Terminating
resistor
RDA
RDA
330
RDB
RDB
*1
Terminating
SG
SG
resistor
330
RSA
RSA
Class D
Class D
RSB
RSB
Grounding
Grounding
CSA
CSA
CSB
CSB
Description
This manual confers no industrial property rights or any rights of any other kind,
nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be
held responsible for any problems involving industrial property rights which may
occur as a result of using the contents noted in this manual.
Warranty
Mitsubishi will not be held liable for damage caused by factors found not to be
the cause of Mitsubishi; opportunity loss or lost profits caused by faults in the
Mitsubishi products; damage, secondary damage, accident compensation
caused by special factors unpredictable by Mitsubishi; damages to products
other than Mitsubishi products; and to other duties.
For safe use
This product has been manufactured as a general-purpose part for general
industries, and has not been designed or manufactured to be incorporated in
a device or system used in purposes related to human life.
Before using the product for special purposes such as nuclear power, electric
power, aerospace, medicine or passenger movement vehicles, consult with
Mitsubishi Electric.
This product has been manufactured under strict quality control. However
when installing the product where major accidents or losses could occur if the
product fails, install appropriate backup or failsafe functions in the system.
HEAD OFFICE
: TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310,
JAPAN
HIMEJI WORKS
: 840, CHIYODA CHO, HIMEJI, JAPAN
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