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2 Specifications
2.1 General Specifications
22
FX
3U
-J1939 User's Manual
2.1
General Specifications
Items other than the following table are equivalent to those of the PLC main unit/CPU Module.
For further information of general specifications, refer to the manual of the PLC main unit/CPU Module.
Refer to FX
3G
Hardware Edition
Refer to FX
3GC
Hardware Edition
Refer to FX
3U
Hardware Edition
Refer to FX
3UC
Hardware Edition
Refer to MELSEC iQ-F FX5U User's Manual (Hardware)
Refer to MELSEC iQ-F FX5UC User's Manual (Hardware)
2.2
Power Supply Specifications
For details on the 24V DC power supply of main unit, refer to the manual of the PLC main unit.
2.3
Performance Specifications
Item
Specification
Dielectric Withstand Voltage
500V AC for one minute
Between all terminals and ground terminal
Insulation Resistance
5M
or more by 500V DC megger
Item
Specification
Internal Power Supply
24V DC, max 110 mA
24V DC power is supplied internally from the main unit.
Item
Specification
Transmission Type
CAN bus network
Applicable Function
J1939 Node or CAN Layer 2 Node
J1939 Services According to SAE
Standards
•
SAE J1939 (recommended practice for serial communication vehicle networks)
•
SAE J1939-11 (physical layer)
•
SAE J1939-15 (reduced physical layer)
•
SAE J1939-21 (data link layer)
•
SAE J1939-71 (vehicle application layer)
•
SAE J1939-73 (application layer - diagnostics)
•
SAE J1939-75 (application layer -generator sets and industrial)
•
SAE J1939-81 (network management)
Network Size
SAE J1939-11
2 to 30 nodes / segment
SAE J1939-15
2 to 10 nodes / segment
CAN (Layer 2)
2 to 127 nodes
Communication Method
Cyclic, acyclic or request driven
Supported
Transmission
Speed / Max.
Bus Length
SAE J1939-11
250 kbps / 40 m (131'2"), stubs max. 1 m (3'3")
SAE J1939-15
250 kbps / 40 m (131'2"), stubs max. 3 m (9'10")
CAN (Layer 2)
1 Mbps / 25 m (82')
800 kbps / 50 m (164')
500 kbps / 100 m (328'1")
250 kbps / 250 m (820'2")
125 kbps / 500 m (1,640'5")
100 kbps / 600 m (1,968'6")
50 kbps / 1000 m (3,280'10")
20 kbps / 2500 m (8,202'1")
10 kbps / 5000 m (16,404'2")
Connection Cable
Refer to Subsection 4.1.2.
Terminating Resistor
120
Accessory: 120
1/2W)
No. of Occupied I/O Points
8 points
(taken from either the input or output points of the PLC)