Siemens HT 8 - Page 37

16 digital inputs (5 V) can be fetched via the X11 connector.
Connector designation: X11
Connector type: 20-pin plug connector
Max. cable length: 0.85 m
Table 1-23 Assignment of connector X11
Pin Name Type Meaning
1 DT1
O
Direct key 1
... ... ...
16 DT16 Direct key 16
17 P5V
V
+ 5 V (fused)
18 P5V + 5 V (fused)
19 GND Ground
20 GND Ground
16 digital inputs can be polled by the X70/X205/DTM connector.
Connector designation: X70/X205/DTM
Connector type: 20-pin plug connector
Max. cable length: 0.85 m
Table 1-24 Assignment of connector X70 (MCP, MPP, HAM) / X205 (TCU) / DTM
Pin Name Type Meaning
1 DT1
I
1)
Direct key 1
... ... ...
16 DT16 Direct key 16
17 P5V / CON1
2)
V
+ 5 V input voltage
3)
18 P5V / CON2
2)
+ 5 V input voltage
3)
19 GND Ground
20 GND Ground
1)
The inputs are electrically isolated for MCP / MPP / HAM and DTM.
2)
For the TCU, it is evaluated whether the direct keys have been connected.
3)
Power consumption: 100 mA for MCP / MPP / HAM; 500 mA for DTM
Table 1-25 Signal level
HIGH level: 5 V or open
Low level <= 0.8 V
General information and networking
1.3 Connecting
Handheld Terminal HT 8
Manual, 07/2015, A5E36371621B-AB 37