Page 15
Installation and Assembly
colorCONTROL MFA-7/-14/-21/-28
4.4.5
RS422 (with IF2001/USB Converter)
The RS422 interface can be used for configuration as well as for permanent data transmission, even over longer dis-
tances. It is interference-resistant and suitable for industrial applications. Distances of up to 1200 m are possible with a
twisted-pair cable.
For the connection between sensor and PC, the lines must be crossed.
i
Only disconnect or connect the sub-D connection between the RS422 and USB converter when no voltage is flow-
ing.
Characteristics
- Maximum input voltage RX+, RX-: ±14
V
max
internally terminated with 120 Ohm.
- Output voltage TX: ±2 V, differential at 2 x 50 Ohm
Parameter
- Baud rate 115200 baud
- Start/stop bit: 1
- Data bits: 8
- Handshake: No
- Parity: None
- Command protocol: ASCII
i
The RS422 interface is widely used in industrial applications.
Use a suitable USB converter, e.g. the IF2001/USB
, if your PC/Notebook only has USB ports.
Controller
Terminal, PLC,
IF2001/USB Converter
from MICRO-EPSILON
Symmetrical differen-
tial signals accord-
ing to EIA-422, not
electrically separated
from the voltage
supply.
Use a shielded cable
with twisted wires,
e.g. CAB-M12-8P-co-
straight.
Pin
Cable color
(Cable: CAB-M12-
8P-co-straight)
Function
Function
7
Blue
Tx-
Rx-
8
Red
Tx+
Rx+
6
Pink
Rx-
Tx-
5
Gray
Rx+
Tx+
1
White
GND
GND
Fig. 5 Crossed data lines on receive and transmit side
