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IP 240
Channel 2:
•
Base time without configuring
•
Position decoding mode
•
8 tracks used, without hysteresis
In one FW cycle,
•
two tracks can be entered,
•
both outputs can be switched,
•
two actual value-dependent interrupts can be generated,
•
and the DRBR signal can trigger an interrupt.
Counting mode
Table 12-2. Firmware Execution Times, Counting Mode
Description
Base time without configuring
Base time for counting
Additional time for IP 240 to generate an interrupt
(for each interrupt bit set)
Time for a data exchange
Data Read
Data Write
Example:
Channel 1:
•
Base time without configuring
•
Counting mode
•
Two interrupts can generated in each FW cycle.
Channel 2:
•
Base time without configuring (channel not used)
EWA 4NEB 811 6120-02a
Response Times
t
=
45 µs
A
520 µs
t
=
WW
8 x t
= 1840 µs
WS2
60 µs
2 x t
=
WZ1
2 x t
=
90 µs
WZ2
2 x t
=
60 µs
WZ3
30 µs
t
=
WZ3
----------------
t
= 2645 µs
ka2
Max. execu-
Abbrev.
tion time
t
45 µs
A
t
470 µs
Z
t
30 µs
ZZ1
t
440 µs
kom
560 µs
t
kom
45 µs
t
=
A
t
=
470 µs
Z
2 x t
=
60 µs
ZZ1
----------------
t
=
575 µs
ka1
t
=
45 µs
A
----------------
45 µs
t
=
ka2
12-5
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