Hardware Manual COMBILOG 1020
33
As inputs the I/Os can be used for collecting feed-back signals,
for measuring frequencies, as counters or for receiving special
serial 8-bit-graycode signals. Status information can be issued by
the outputs. Thereby host-controlled or process-controlled status
outputs are possible.
The digital inputs have an excess voltage protection (transil di-
odes), with nominal threshold 18 V. Input voltages between
3.5 VDC and 18 DC are interpreted as logic
LOW
("0"), input volt-
ages lower than 1.0 V as logic
HIGH
("1"). The maximum input
current is 1.5 mA.
+ 3,5 V
+ 1,0 V
0 V
low
high (1)
high
low (0)
signal level
logic level
Figure 4.1 Definition of signal levels and logic levels
The outputs are open-collector type with a maximum voltage of
18 VDC and a maximum current of 100 mA.
Summary of Contents for COMBILOG 1020
Page 1: ...COMBILOG 1020 Datalogger Hardware Manual Version 3 09...
Page 2: ...Hardware Manual COMBILOG 1020 2 Issue 03 11 2005 Technical data are subject to change...
Page 4: ...Hardware Manual COMBILOG 1020 4...
Page 6: ...Hardware Manual COMBILOG 1020 6...
Page 12: ...Hardware Manual COMBILOG 1020 12...
Page 86: ...Hardware Manual COMBILOG 1020 86 Bild 8 1 Example Master Slave System...
Page 169: ...Hardware Manual COMBILOG 1020 169...
Page 170: ...Hardware Manual COMBILOG 1020 170...