Specifications

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