Serial Module FI 820F

Features 

… Provides 2 serial interfaces 

… Transmission rates up to 38.4 KBaud configurable 

… Physical interfaces RS485, RS422, RS232 selectable 

… Electrical isolation 

… Module can be removed or inserted during operation 

… Redundant operation, with redundant AC 800F

Description 

The FI 820F module provides connectivity to a variety of serial fieldbuses and serial protocols. Standard protocol is MODBUS By using different connection cables the physical interface can easily be selected: RS485 (half duplex), RS422 (full duplex) or RS232. All interfaces are electrically isolated and support redundant operation in conjunction with a second AC 800F.

LED Displays 

State 

Off No supply power, module is isolated 

Green Module is active and working properly 

Orange Module has been identified by AC 800F, but has not yet been activated 

Red Module powered up, but not yet identified, or an error has occurred 

RxD0 

Green Receive data on channel 0 

TxD0 

Green Transmit data on channel 0 

RxD1 

Green Receive data on channel 1 

TxD1 

Green Transmit data on channel 1

Technical Data

Rated voltage 5 V, ± 3% from basic unit 

Power consumption 1.6 - 2.6 W, appending from communication 

Channel supply: 

Raged voltage 5 V, ± 10% 

Power consump. 0.15 W, when idling 

per channel 0.30 W, during communication 

Output voltage for termination (Vcc_Term) 

Rated voltage 5 V, ± 10% 

Max. output current 20 mA 

Weight approx. 0.145 kg