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Technical data
7
7.1
Power
Table 7-1
Power supply
Description
Specification
Supply voltage [V]
12 - 27 VDC
Um: 60 VDC
for Ex d, t
12 - 24 VDC
Reverse polarity protection
Yes
Power consumption
1.1 W
Specification in case of Intrinsic safety power supply: Ui: 20 V, Ii: 484 mA, Pi: 2.3 W, Li: 0.6 uH,
Ci: 1.9 nF.
Table 7-2
Power unit
Description
Specification
Protection class
Class I (EN60950)
Galvanic isolation primary/secondary
SELV acc. to EN 60950 and EN 50178 or equiva‐
lent
Master/Receiver
Isolation 500 VAC
7.2
Modbus Communication Specification
Table 7-3
Modbus communication specification
Description
Specification
Device type
Slave
Baud rates
● 9600
● 19 200 (Factory setting)
● 38 400
● 57 600
● 76 800
● 115 200
Number of stations
Max. 31 per segment without repeaters
Device address range
1 to 247
Protocol
Modbus RTU
Electrical interface
RS-485, 2-wire
SITRANS FC410
Compact Operating Instructions, 05/2020, A5E39942309-AB
41