I/O Status
8-2 | PLC300
Expansions
If there are expansions, we access the screens that show their status by pressing <>.
The expansion screens depend on the kind of I/O that each expansion contains.
For instance, an IOA-01, which has 1 analog input, 2 analog outputs, 2 digital inputs and
2 digital outputs:
[- STATUS PLC300 -]
108...4..1
I108..101: 00000011
O108..101: 00000010
The example screen shows the digital inputs and outputs of the expansion IOA-01, in the
slot 1, where the inputs DI101 and DI102, as well as the output DO102, are active.
By pressing the arrow <>, again, we can see the analog inputs of this expansion:
[- STATUS PLC300 -]
AI101:-10.0V -19.0mA
AI102: 8.3V 16.6mA
←
AI102 only in the IOB card
By pressing the arrow <>, again, the analog inputs of this expansion are shown:
[- STATUS PLC300 -]
AO101: 8.3V 16.6mA
AO102: 1.0V 2.0mA
IOE Card (thermistor reading):
The IOE cards have five inputs for reading PTC, PT-100 or KTY-84 thermistors.
In the user program (ladder), the thermal sensors are treated as analog inputs (AI101...
AI105 or AI201...AI205).
The status screens show the temperature in each sensor, between -20 °C and +200 °C.
If the monitored temperature is lower than -20 °C the thermal sensor is probably with a
broken wire, which is indicated by the symbol: “=/=(FP)”.
[- STATUS PLC300 -]
S101: 105
o
C
S102: -13
o
C
S103:=/=(FP )
By pressing the key <> again, the other two temperatures are shown:
[- STATUS PLC300 -]
S104: 58
o
C
S105: 27
o
C
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