Sartorius PR 5211 Series - RS-485 Interface

Installing the Instrument PR 5211 Instrument Manual
EN-14 Sartorius
3.2.2 RS-485 Interface
The interface is intended for connecting a remote display and a PC for data transmission using the
SMA protocol.
Connection method
4-pin plug-in terminal block
Number of channels/type
1 RS-485, full duplex
Transfer rate (Bits/s)
300, 600, 1200, 2400, 4800, <9600>, 19200
Bits/stop bits:
Remote display
<7/1>
SMA protocol
<8/1>
Parity:
Remote display
<even>
SMA protocol
<none>
Signals RS-485
RxA (R-), RxB (R+), TxA, TxB
Electrical isolation
yes
Cable length
max. 1000 m
Cable type
Shielded twisted pair (e.g. LifYCY 2x2x0.20)
<...> = default settings (factory settings)
The RS-485-receiver (Rx) has an internal terminal resistance of 120 ¥ and 1.6 k¥ to the internal bus supply
voltage (- at RxA + at RxB).
3.2.2.1 Connecting to PC or to RS-485 Converter
Point-to-point connection for the SMA protocol.
Configuration PR 5211/..
[Parameter]-[Communication]: ’SMA protocol’