PPMB1
XX
21/47
ppmb1xx_g_en_105
6. Digital inputs
/ outputs
Recording unit is equipped with two input
/ output pins, located on power supply
connector. Both are galvanically isolated from internal electronics of recording
unit.
Pins can be used as inputs or outputs with backward reading, but never as input
and output simultaneously.
PWR
X1
6
P
E
5
V
cc
4
G
N
D
3
S
B
2
D
IO
1
1
D
IO
2
Fig. 9 - Power supply and digital inputs
/ outputs connector
Connector type: WAGO 769-666
PIN
Signal
Description
1
DIO2
Digital input
/ output n. 2
2
DIO1
Digital input
/ output n. 1
DIOx
Vcc
GND
10k
DO settings
DO state
DIOx state
Fig. 10 - Internal structure of single input
/ output wiring
Maximum input level for Log. 0
4.5 V
Minimal input level for Log. 1
12.5 V
For proper input functionality, output must be set to value Log. 0.
Wiring
of digital
inputs
/
outputs
Inputs