Mitsubishi Electronics MELSEC FX2N ユーザーズマニュアル
FX2N-32DP-IF Profibus-DP Interface Unit
Introduction 1
1-8
1.3.3
Configuration Rules
1) Special function blocks: Max. 8 blocks per 32DP-IF.
Check the loading on the 5 V DC bus supply. Consumption values for special function
blocks can be found in Table 1.7. For maximum available current see the Table 1.6.
blocks can be found in Table 1.7. For maximum available current see the Table 1.6.
2) Maximum I/O points: 256 or less.
3) Check the loading on the 24 V DC service supply. Look up the number of expansion I/O in
Figure 1.4. Find the residual current. This can then be used to power sensors etc.
4) Check total exchanged data length in DP-master, this number might be limited by the DP-
master unit. Data length is exchanged between the 32DP-IF and a DP-master in every
cycle.
For the data length of connected extension units/blocks, refer to Table 1.3.
However, the maximum amount of data that can be exchanged with the 32DP-IF is 200 byte
inputs and 200 byte outputs.
cycle.
For the data length of connected extension units/blocks, refer to Table 1.3.
However, the maximum amount of data that can be exchanged with the 32DP-IF is 200 byte
inputs and 200 byte outputs.
Figure 1.4: Number of Expansion I/O and 24 V DC Service Supply Capacity (mA)
For extension unit, refer to FX
2N
Series Hardware Manual.
Table 1.6: 24 and 5 V DC Supply Capacity
Items
Power Supply
24 V DC Service Supply
500 mA at 24 V DC
Max. 5 V DC Bus Supply
220 mA at 5 V DC
Table 1.7: Power Supply for Special Function Blocks
Model
Description
Number of
I/O Points
Power Supply
Internal 5 V DC
(mA)
External 24 V DC
(mA)
FX
2N
-4DA
Digital to analog converter
8
30
200
FX
2N
-4AD
Analog to digital converter
8
30
55
FX
2N
-4AD-PT
PT100 probe interface
8
30
50
FX
2N
-4AD-TC
Thermo-couple interface
8
30
50
Number of
additional
output
(points)
additional
output
(points)
> 32
32
200
150
100
50
0
Invalid configuration
24
275
225
175
125
75
25
16
350
300
250
200
150
100
50
0
8
425
375
325
275
225
175
125
75
25
0
500
450
400
350
300
250
200
150
100
0
8
16
24
32
40
48
56
64
> 64
Number of additional input (points)