Mitsubishi Electric FX3U-CAN, User Manual

Page: 28 / 228

1 Introduction
1.3 System Configuration
22
FX
3U
-CAN User's Manual
1.3.3 Connection with PLC
The FX
3U
-CAN connects with a PLC via an extension cable.
The FX
3U
-CAN is handled as a special extension block of the PLC. The unit number of the FX
3U
-CAN is
automatically assigned No. 0 to No. 7
*1*2
starting from the special function unit/block closest to the PLC main
unit/CPU Module.
(This unit number is used for the designation of a FROM/TO instruction.)
For further information of the assignment of the I/O number and unit number of the PLC, refer to the following
manual corresponding to the connected PLC.
*1. Unit No. 1 to No. 7 is assigned when the main unit is an FX
3UC
-32MT-LT(-2).
*2. Unit No. 2 to No. 16 is assigned when the CPU module is an FX5U/FX5UC.
→
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)
• An FX
2NC
-CNV-IF or FX
3UC
-1PS-5V is necessary to connect the FX
3U
-CAN to an FX
3GC
/FX
3UC
PLC.
• An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect the FX
3U
-CAN to an FX5U/FX5UC PLC.
• The optional FX
0N
-65EC (FX
0N
-30EC) and FX
2N
-CNV-BC are necessary to lengthen the extension cable.
(FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLC)
• The optional FX5-65EC (FX5-30EC) and FX5-CNV-BC are necessary to lengthen the extension cable.
(FX5U/FX5UC PLC)
• The number of I/O points occupied by the FX
3U
-CAN is eight. Make sure that the total number of I/O points
(occupied I/O points) of the main unit, extension unit(s), extension block(s) and the number of points
occupied by special function blocks does not exceed the maximum number of I/O points of the PLC.
For further information of the maximum number of I/O points of the PLC, refer to the respective product manual.
→
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)
FX
3G
/FX
3U
/FX5U PLC
FX
3U
-
CAN
FX
3GC
/FX
3UC
/
FX5UC PLC
FX
3U
-
CAN
FX
2NC
-CNV-IF
Other
extension
units/blocks
Other
extension
units/blocks