MITSUBISHI ELECTRIC FX2N - Manual (Page 19)

FX2N-32DP-IF Profibus-DP Interface Unit Introduction 1
1-9
1.3.4 Example Configuration
Figure 1.5: Example Configuration
For configuration rules, refer to section 1.3.3.
1) Check special function blocks.
a) Count special function blocks.
This 32DP-IF has 3 special function blocks connected (FX 2N -4AD
×
1, FX 2N -4DA
×
2).
This configuration is OK as the total number of blocks is less than 8.
b) 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.
This configuration is OK as the 5 V DC bus supply consumption value is less than 220 mA
(5 V DC bus supply capacity).
However, this system needs a supply of 455 mA from an external 24 V DC power supply, for
the special function blocks. In this case, the 32DP-IF can supply 250 mA for external 24 V
DC. See next page (check the loading on the 24 V DC service supply)
Table 1.8: Check 5 V DC Bus Supply
Items Internal 5 V DC External 24 V DC
FX 2N -4AD 30 mA 55 mA
FX
2N
-4DA 30 mA 200 mA
FX
2N
-4DA 30 mA 200 mA
Total Consumption Values 90 mA <220 mA 455 mA
Profibus-DP
network
FX
2N
-
32DP-IF
FX
2N
-
4AD
FX
2N
-16EX
-ES/UL
FX
2N
-
4DA
FX
2N
-16EYT
-ESS/UL
FX
2N
-
4DA
A Series
PLC
A1SJ71PB92 (software version E)