Parker Hannifin S.p.A. - Divisione S.B.C. “SPD” User’s Manual
46
8.2.9 Value comparators
The Pr96:95 and Pr98:97 parameters have the alternative function of value comparators.
With b94.10 = 0, then b94.8 = 1 if Pr96:95 > Pr63:62 (or Pr66:67 if feedback encoder)
With Pb94.10 = 1 then Pb94.8 = 1 se Pr96:95 > Pr61:60
With b94.11 = 0, then b94.9 = 1 if Pr98:97 > Pr63:62 (or Pr66:67 if feedback encoder)
With Pb94.11 = 1 then Pb94.9 = 1 se Pr98:97 > Pr61:60
This function is run every 6.144 ms.
If the value comparators functions are not used, the Pr95, Pr96, Pr97, Pr98, b94.10 and b94.11
parameters by the PLC program as general purpose registers.
8.2.10 Value capture
At every positive front of digital input 1, the value of Pr63:62 (or Pr66:67) is captured and
stored in Pr68:69 and b70.15 is set to 1 to signal the event. B70.15 is not reset automatically
but must be executed by the pico-PLC or the serial line.
At each In0 or the Zero Encoder input (Pb70.0) Pr66:67→Pr58:59 Pb70.14=1
8.2.11 Output programmable on module
This function allows having the status of a digital function based on the position of the motor
shaft into a module. The user must set such module in Pr144:145, besides two positions
Pr146:147 and Pr148:149 into the module to define the points at which the output 1 must be
inverted 1 (terminal 8 of X4). The initial position value of the motor shaft must be set to
parameter Pr142:143, the output status to Pb91.1; the function is enabled if b70.3=1 and in
this case, Pr142:143 indicates the motor Position in the same module. The Position can be
changed placing an offset in Pr140. The digital output is updated every 512 µs. The limits that
can be set are reported in the parameter list; in addition, it should be:
0 =< Pr146:147 =< Pr148:149 =< Pr144:145.
If the b99.8 bit is set to 1, when power supply is restored, the undervoltage alarm will be
automatically reset.
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