Configuration Rules - Mitsubishi FX2N User Manual

FX2N-32DP-IF Profibus-DP Interface Unit
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.
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.
Table 1.6: 24 and 5 V DC Supply Capacity
Items
24 V DC Service Supply
Max. 5 V DC Bus Supply
Table 1.7: Power Supply for Special Function Blocks
Model
FX -4DA
2N
FX -4AD
2N
FX -4AD-PT
2N
FX -4AD-TC
2N
Figure 1.4: Number of Expansion I/O and 24 V DC Service Supply Capacity (mA)
Number of
additional
output
(points)
For extension unit, refer to FX
500 mA at 24 V DC
220 mA at 5 V DC
Description
Digital to analog converter
Analog to digital converter
PT100 probe interface
Thermo-couple interface
> 32
32 200 150
24 275 225
16 350 300
8 425 375
0 500 450
0 8
Series Hardware Manual.
2N
Power Supply
Number of
I/O Points
8
8
8
8
100 50 0
175 125 75
250 200 150
325 275 225
400 350 300
16 24 32
Number of additional input (points)
Power Supply
Internal 5 V DC External 24 V DC
(mA)
30
30
30
30
Invalid configuration
25
100 50 0
175 125 75
250 200 150
40 48 56
Introduction 1
(mA)
200
55
50
50
25
100
64 > 64
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