User manual
REI2 
User manual 
Doc: R2U_2_1079_002_E 
Version: 1.07.9 
Page 
43 of 64 
17.1.1. Supply 
180° 5 pole socket for power supply 
1 Ground  
2  Not connected 
3  External power supply input of from 9 to 24 allowed, maximum absoprtion 10 W
1
4  Not connected 
5  Not connected 
17.1.2. Analogue I/O 
240° 6 pole socket for connection of analogue acquisition devices 
1  Analogue input 0 (0..5V) 
2  Analogue input 1 (0..5V) 
3  Analogue input 2 (0..5V) 
4  5V regulated output for power supply of external devices, max 800mA 
5  Ground (reference for analogue inputs) 
6 Not connected 
17.1.3. Digital I/O 
240° 6 pole socket for connection of digital acquisition devices 
1  Digital input/output 0 (0/5V, configurable via software) 
2  Digital input/output 1 (0/5V, configurable via software) 
3  Digital input/output 2 (0/5V, configurable via software) 
4  Digital input/output 3 (0/5V, configurable via software) 
5 Ground 
6  Digital output (0/5V) 
17.1.4. Radio 
5 pole miniDIN socket 
1 Input  
2 -10V, max 20mA 
3 Output 
4  Regulated 5V output, max 800mA 
5 Ground  
17.1.5. Computer A 
240° 6 pole socket standard signal RS 232 no hardware protocol 
1 Serial output (TXD) 
2 Not used 
3  RS232 input for flow control 
4  RS232 output for flow control 
5 GND 
6 Serial input (RXD) 
1
Between 9 and 11 volts REI2 is correctly powered but the internal batteries cannot be recharged.  










