19
9.
NETWORK
Up to 32 EE31 transmitters (additional "N" in order code) can be connected in a RS-485
bus system to a single PC interface.
Using the software which is included in the scope of supply the transmitters can be
configurated individually or in the entire network group.
Network configuration:
Technical Data:
- Max. network size:
32 transmitters / COM-PORT of PC
- Max. network expansion:
1200m total length
- Transmission rate:
9600 Baud
Mounting notes:
Data cables:
- external diameter < 4mm
- 2-core twisted pair
- Typ. 50 pF/m, impedance 100 Ohm, non-shielded
- In accordance with the RS485 standard, cables in category 5
(UTP), specified according to EIA/TIA/ANSI 568, meet these
requirements.
For high noise emissions, especially for large cable lengths, the use of shielded cables is
recommended. (Shield laid at GND Ser)
2 analogue
outputs
converter
RS232 (COM) interface
A+
Ra
B-
A+
Ra
B-
1) Note: to enable optimum expansion, both ends of the network must be terminated with a terminating
resistorwith Ra 100 Ohm.
2) Note: to adapt the RS232 interface on the PC to the RS485 network protocol, a signal converter
is required.
1 )
1)
2 )
i
Hardware
