PR Electronics Communication enabler PR 4511

2026-04-08

PR4511 Communication enabler

Common specifications

Supply
Max. required power	0.15 W
Isolation voltage
Isolation voltage, test / working	2.5 kVAC / 250 VAC reinforced isolation
Response time
Response time	< 20 ms
Signal / noise ratio	> 60 dB
Update rate	> 50 Hz
Extended EMC immunity: NAMUR NE21, A criterion, burst	No loss of communication
Signal type	RS-485 half duplex
Serial protocol	Modbus RTU
Modbus mode	RTU – slave
Devices on an RS485 line	Up to 32 (w/o a repeater)
Data rates, baud	2400, 4800, 9600, 19200, 38400, 57600, 115200
Automatic baudrate detection	Yes – can be configured ON or OFF
Parity	Even, Odd, None
Stop bit(s)	1 or 2
Digital addressing	1…247
Response delay	0…1000 ms