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Fig. 4.2 Property Box for analog input
See ALP Help for detailed information about analog input configuration.
4.1.1
Analog mode
Configurable parameters:
Input mode
– select
Analog
Filter
– filter time constant (0…60 s)
Input signal
– 4-20 mA, 0-10 V, 0-4000 ohm
Lower limit
– lower measuring limit
Upper limit
– upper measuring limit
Decimal places
– parameter
DP
for Modbus request (Table 4.2). The parameter
DP
has to be set to determine the accuracy, if the measured value is requested over
Modbus as integer.
If the type of input signal is selected, the input must be configured on the hardware side
using jumpers XP
1…XP4 on the middle PCB in accordance with the selection.
The middle PCB is under the top PCB, but the last one does not need to be removed in this
case. The location of the jumpers on the PCB is shown in Fig. 4.3.
Jumper positions corresponding to the input signals are shown in Fig. 4.4.
All analog inputs are configured for 4-20 mA by default.
Fig. 4.3 Input jumpers on the middle PCB
WARNING
The voltage on some components on the circuit board can be dangerous. Direct
contact with the circuit board or penetration of a foreign body in the enclosure must
be avoided.