Akytec MV110-16DN Manuale d'uso - Pagina 12
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Operation
6. Operation
In the operation mode the module is controlled by a network Master in Modbus network.
In addition, the input states and counter states can be read out and the counter states
can be set to 0 (see 6.1).
Modbus functions 03, 04 for reading and 16 for writing can be used.
6.1
Input and counter status
The input status can be read out as a bitmask. The corresponding Modbus registers can
be taken from the table 6.1. The least significant bit of the mask corresponds to the
input 1.
To reset the counter, write 0 to the corresponding register.
6.2
Fault condition
If the data exchange on the serial port is interrupted (i. e. there is no command from the
master within the time specified by the parameter t.out), the following applies:
–
LED FAULT flashes.
–
Once a request from the master device comes, the display 'refreshes'.
–
If t.out parameter is set to 0, 'Fault Condition' is not defined.
6.3
Memory addressing
All variables and parameters in the Table 6.2 are of the type UNIT16.
R – read access
W – write access
Table 6.1 Modbus register
Time-out, s (t.out)
Input status bitmask
Counter status of the input 1
Counter status of the input 2
...
Counter status of the input 16
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Parameter
Unit
Access
1..600
RW
0..65535
R
0..65535
RW
0..65535
RW
...
...
0..65535
RW
Address
hex
dec
0030
0048
0033
0051
0040
0064
0041
0065
...
...
004F
0079
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