SystemAir SRC, Инструкция по установке и эксплуатации

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RS485+ RS485- GND RS485+ RS485- GND
MB2
RS485+ RS485- GND RS485+ RS485- GND
MB2
RS485+ RS485- GND RS485+ RS485- GND
MB2
T5 A+B-
RE
F
RS485
T5 A+B-
RE
F
RS485
A B
GND
Max. number of slaves : 31
SRC communication board
SLAVE 5 SLAVE 4 SLAVE 3
SLAVE 2 SLAVE 1
MASTER
Information
The transmission is configured in 9600 baud, without parity, with 8 data bits and 1 stop bit.
7 SRC
Bus topology Star topology Trunk and branch topology
Prohibited Prohibited Prohibited
Ring topology Linear topology
Prohibited Authorized
3.3. WIRING
The interconnection wires must be a screened twisted pair. The wire impedance shall be between 100 and
130 ohms, and its cross-sectional area between 0.12 and 0.3 mm
2
(26 to 22 AWG).
Each network is limited to 31 units and a distance of 1,000 meters. However, we recommend using a
repeater well before reaching the limits and in accordance with the geographical constraints.
3.3.1. NETWORK PRINCIPLE