Festo MPA Series Manual page 62

2. MPA pressure sensor
Parameter
Unit for pressure specifications and
delay for pressure diagnosis
Activate and set limit value monitor
ing
Lower limit value Low Byte
Lower limit value High Byte
Upper limit value Low Byte
Upper limit value High Byte
Hysteresis Low Byte
Hysteresis High Byte
1)
The function numbers are derived from the module number 3 (see Fig. 2/2) and the calculation
4828 + 3 * 64 + x = 5020 + x (x: see tables in section 2.1.4).
2)
Hexadecimal, can be useful with numerical values as an intermediate step for calculating the
binary values
3)
Binary values
Tab. 2/11: Set the parameters for the MPA pressure sensor via function numbers
2−14
For the MPA pressure sensor in Fig. 2/2, the following para
meters are changed:
1)
Function no.
5020 + 6 = 5026
5020 + 7 = 5027
5020 + 9 = 5029
5020 + 10 = 5030
5020 + 11 = 5031
5020 + 12 = 5032
5020 + 13 = 5033
5020 + 14 = 5034
In this example, the settings for all other parameters remain
at their default values.
In this parameterisation example, the MPA pressure sensor
with the settings from Tab. 2/11 behaves as follows:
Diagnostic message with the red LED v above 9.5 bar.
The red LED v goes out as soon as the pressure sinks
below 9 bar (because the hysteresis is set to 0.5 bar).
Diagnostic message with the red LED V below 6.5 bar
(because the hysteresis is set to 0.5 bar).
The red LED V goes out as soon as the pressure rises
above 7 bar.
Setting Value
mbar
160 ms
Monitor the upper/lower
limit values
7000 mbar 58
h
1B
h
9500 mbar 1C
h
25
h
500 mbar F4
h
01
h
Festo P.BE−MPA−ELECTRONIC−EN en 0804NH
2) 3)
Value
Bit 7... 0
00010000
b
00000011
b
01011000
b
00011011
b
00011100
b
00100101
b
11110100
b
00000001
b