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8. OPTION
8.9 Serial Multi-Drop Connection Unit
8 - 13
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
PARTS NAME
5
UL, cUL
STANDARDS AND
EMC DIRECTIVE
6
INSTALLATION
7
WIRING
8
OPTION
8.9.4 Parts name
8.9.5 Caution for compliance with EMC Directive
Please use the serial multi-drop connection unit while installed in conductive shielded control panels.
Programmable logic controllers are open-type devices that must be installed and used within conductive control panels.
Please secure the control panel lid to the control panel (for conduction).
Installation within a control panel greatly affects the safety of the system and aids in shielding noise from the serial multi-
drop connection unit.
No. Name Description
1) Installation hole for the main unit Installation hole (2-Φ4.5)
2) LED
POWER Lit in green when the power is properly supplied.
SD Lit in green when the data is being sent to PLC.
RD Lit in green when the data is being received from PLC.
ERROR Lit or blinking depending on the status.
3) Terminating resistor selector switch
Can be selected among 110 , OPEN, and 330 (set to "OPEN" by default).
4) Connector for the PLC communication D-Sub 9pin (Male), for RS-232 connection
5)
Connector selection switch for the PLC
communication
Switch for selecting RS-422 or RS-232 (set to "RS-422" by default)
6) USB port For connecting a PC (for changing the communication driver)
7) Connector for the PLC communication D-Sub 9pin (Female), for RS-422 connection
8) Protective cover Protects unused D-sub connector, USB port, and switches.
9)
Terminal block for the serial multi-drop
communication
Terminal block 5-pin (with a protective cover) M3 Tightening torque 0.5 to 0.6N•m
10) Power supply connector 24VDC power supply connector insertion point (A dedicated cable is included.)
11) Slider for installing the DIN rail -
12)
Mode selection switch
(Slide switch)
Do not operate.
(Set to right by default. When set to left, the module does not operate normally.)
57 (2.25")
72 (2.84")
1)
2)
10)
12)
11)
4)
3)
7)
8)
5)
5)
9)
80
Protective cover is installed Protective cover is removed
65 (2.56")
2- 4.5
90 (3.55")
Unit: mm (inch)