ASCOM ELISE2 Installation Manual page 20

Installation Guide
ELISE2
Connections for Serial Line Printer
To connect the serial line printer, see
Figure 14. Connections for serial line printing.
RS422 Communication with External Unit
Depending on software application the RS422 port is used or not. If it is used, the
connector J6 is connected to the external unit as shown in the figure below.
To external unit
communication
Figure 15. Connection of external unit via the RS422 port.
Connection of AUX Inputs and AUX Outputs
The application of the inputs and outputs are software dependent.
Two digital inputs and two digital outputs can be connected via J16. The outputs are of
open-collector type and the output signals are dimensioned for 100 mA at max 12 V.
A pull-up resistor should be connected to the output as shown in
Galvanic isolation of the inputs and outputs is provided by using a separate power supply.
When galvanic isolation is not needed, supply voltage can be taken from the ELISE2 circuit
board by connecting J16-1 to J5-3 and J16-6 to J5-4.
2005-06-15 / Ver.G
25-pin male
D-sub connector
DTR
20
6
DSR
8
DCD
2
TXD
3
RXD
7
GND
4
RTS
5
CTS
Rb
Ra
using RS422
Tb
Ta
figure 14 for the pin-layout and wiring run.
ELISE
J11/J7/J8
1 (not used)
2 TX
3 RX
4 CTRL IN
5 CTRL OUT
6 (not used)
7 GND
8 (not used)
J6
1 T(b)
2 T(a)
3 R(b)
4 R(a)
TD 92232GB
figure 16.
18