7. Menu 74 Parameters
ALSPA PROFIBUS Field Bus Coupler
Page 7-10
Technical Manual
(09/06)
Table 7-4 Allocation of the status word bits (Speed control mode)
Bit
Meaning
0
Ready for switch-on / not ready for switch-on
1
Ready for operation / not ready for operation
2
Operation enabled / operation inhibited
3
Fault / no fault
4
No OFF 2 / OFF 2
5
No OFF 3 / OFF 3
6
Switch-on inhibit / no switch-on inhibit
7
Warning / no warning
8
Set point/actual value within tolerance range /
Set point/actual value not within tolerance range
9
Control requested / operation on site
10
speed reached/ speed under range
11
Device-related
12
Device-related
13
Device-related
14
Device-related
15
Device-related
Each location in the PPO sent back to the PROFIBUS master is
specified according to Table 7-3.
For example, it is decided to monitor 4 parameters, Speed feedback
(P9.01), Current feedback (P9.05), Motor volts (P9.07) and Motor
power (P9.08).
To configure the first parameter source, set P74.72 = 9.01
To configure the first parameter scale, set P74.73 = 1 (speed(%))
To configure the second parameter source, set P74.74 = 9.05
To configure the first parameter scale, set P74.75 = 7 (Current)
To configure the third parameter source, set P74.76 = 9.07
To configure the first parameter scale, set P74.77 = 10 (Volts)
To configure the final parameter source, set P74.78 = 9.08
To configure the first parameter scale, set P74.79 = 6 (Percent)
Note:
When entering parameters via the Keypad, it is
important that any leading zeros are entered after the
decimal point. Entering 9.1 will result in P9.10 being
used, not P9.01.
Entering a value of 0 in a source pointer parameter will mean that a
corresponding value of 0 is written to the PROFIBUS network.
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