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166
CHAPTER 4
Using the Gateway
Sensor Class/
RTU Type
A725
A726
A731
A732
A733
A733GSM
A740
Analog
Pulse
Input
Counter
-
-
3
1
-
-
6
2
12
4
12
4
-
-
Table 2. Number of Sensor Connection on the RTUs
Note: In the A740, the sensor connectors are combined as LC and
OC sensors.
The I/O connectors depicted below show the principle of the con-
nection possibilities of sensors.
Power
Analog4
Analog5
DIG1
7
1
6
2
5
3
4
PulseCounter1
Analog6
Ground
I/O A
Digital
Internal
I/O
Input
Channel
-
1
1
1
-
1
2
1
4
1
4
1
-
1
A720
Power
DIG0
PulseCounter0
Figure 174. A720 Connector Inputs
Logical
Output
Channel
-
-
-
-
-
-
-
-
-
-
-
-
1
1
Analog1
Analog2
7
1
6
2
5
3
4
Analog3
Ground
I/O B
SDI-12
Bus
1
1
-
1
1
1
-
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