Unit Numbers Of Special Function Blocks; Concept Of Assigning; Example Of Assigning - Mitsubishi Electric MELSEC-F FX3G Series User Manual

FX Series Programmable Controllers
3G
User's Manual - Hardware Edition
7.2

Unit Numbers of Special Function Blocks

7.2.1

Concept of assigning

When power is turned on, the main unit (CPU) automatically assigns the numbers 0 to 7 to special function
blocks starting from the one closest to the main unit.
Unit numbers are not given to input/output powered extension units/blocks.
1. Special function blocks connected to main unit
The numbers 0 to 7 are assigned to the special function blocks starting from the one closest to the main unit.
2. Products to which unit numbers are not assigned
• Input/output powered extension units: FX
• Input/output extension blocks:
• Connector conversion adapter:
• Expansion boards:
• Special adapters:
• Extension power supply unit:
7.2.2

Example of assigning

Unit numbers are assigned to the special function blocks in the following configuration.
1. Example of configuration
Special adapter
FX -4AD-ADP
3U
2. Assignment of Unit No.
Unit numbers are assigned to the special function blocks in the above configuration as shown below.
Special adapter
FX -4AD-ADP
3U
94
→ For assignment of input/output numbers, refer to Section 7.1.
Connector
conversion Main unit
adapter FX -24MT/ES
3G
FX -CNV-ADP
3G
Input/output Special
powered function
extension unit block
FX -32ET FX -64CCL
2N 3U
Connector
conversion Main unit
adapter FX -24MT/ES
3G
FX -CNV-ADP
3G
Unit No.
No.1
Input/output Special
powered function
extension unit block
FX -32ET FX -64CCL
2N 3U
7 Assignment of Input/Output Numbers and Unit Numbers
-32ER, FX -48ET, etc.
2N 2N
FX -16EX, FX -16EYR, etc.
2N 2N
FX -CNV-ADP, FX -CNV-BC
3G 2N
FX -232-BD, etc.
3G
FX -232ADP(-MB), FX
3U 3U
FX -1PSU-5V
3U
Input
Special function
extension
block
block
FX -16CCL-M
2N
FX -8EX
2N
Unit No.
No.0
Input
Special function
extension
block
block
FX -16CCL-M
2N
FX -8EX
2N
7.2 Unit Numbers of Special Function Blocks
-4AD-ADP, etc.