58
Modbus
18 Modbus
The ICM can be controlled via commands on its serial (RS485) interface, using
the Modbus RTU protocol. It is possible to control every aspect and setting of the
ICM, as is done by the MP Filtri UK LPA-View control software. All results and
counts are available in all supported formats. One scenario is to use LPA-View to
initially configure the ICM, then the customer-written software only has to read the
test results. This could be used to integrate the ICM measurements with a general
machine control, vehicle control or factory monitoring system.
Customers wishing to implement their own modbus controller software will need
to refer to the full ICM Modbus Programming Manual – however a simple example
is given here.
18.1 Reading the Result Codes
The simplest arrangement is to configure the ICM to test continuously, with a set
interval between tests. For example a
Test Duration
of 2 minutes and a
Test Interval
of 10 minutes. The
Start Testing Automatically
selection can be used so that the
unit does not require a start signal.
Then, the most recent test results can be read from the appropriate Modbus Regis-
ters.
Register Function
56
4µm(C) Result Code
57
6µm(C) Result Code
58
14µm(C) Result Code
Summary of Contents for ICM
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