Operating instructions
Gateway ZAbluegalaxy / DIG-2019NE
•
Installation
L-BAL-312-GB 2020 Index 001
14/23
2.2.7
Console (RS232)
The RS232 (Console) serial interface is provided by the Raspberry PI board. The connector is a
standard 9 pin D-SUB plug, but the interface is connected with two wires only, table 6 shows the pinout.
9pin male D-Sub
1 n.c.
6 n.c.
2 RxD
7 n.c.
3 TxD
8 n.c.
4 n.c.
9 n.c.
5 GND
Table 6: Console (RS232) connector
2.2.8
Digital IO
Digital input (DI1-DI4) and output (DO1-DO4) ports are provided on the multi IO connector (refer to table
7).
1
2
9
10
1 DO4
2 DO3
3 DO2
4 DO1
5 GND-IO
6 VIO (10..32 VDC)
7 DI4
8 DI3
9 DI2
10 DI1
Table 7: Digital IO connector pins
CAUTION
The digital IO must be powered by a SELV power supply, that complies with the
requirements of a limited energy source (LPS) (By using an appropriate supply or an
external fuse).
The digital inputs and outputs are isolated from system power supply. Refer to figure 6: digital IO detailed
schematic for detailed schematic.
The digital input signals (DI1-DI4) refer to GND-IO and have an input impedance of about 5 kOhm.
Switching level for
low
is ≤4V and
high
≥9V. The digital inputs do not require VIO to be present.
The output driver supports resistive and inductive loads.
NOTICE
When using inductive loads, the output driver has internal clamping to demagnetize the
load. This clamps the output pin to about 55 V below VIN. When using this feature, very
carefully evaluate that the demagnetization energy does not overheat the output driver.
VIO
VN330SP
Polarity
Reversal
Protection
DO
Output GPIO
GND-IO
DI
Input GPIO
Load
Figure 6: digital IO detailed schematic
1
6
