Siemens SIMATIC S7-1500 Manual page 56

Article number
PROFINET IO Controller
Services
Update time for IRT
Update time for RT
CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
Equipment Manual, 07/2021, A5E40882737-AB
–
PG/OP communication
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Isochronous mode
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Direct data exchange
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IRT
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PROFIenergy
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Prioritized startup
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Number of connectable IO Devices, max.
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Of which IO devices with IRT, max.
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Number of connectable IO Devices for RT,
max.
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of which in line, max.
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Number of IO Devices that can be simulta-
neously activated/deactivated, max.
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Number of IO Devices per tool, max.
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Updating times
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for send cycle of 125 µs
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for send cycle of 187.5 µs
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for send cycle of 250 µs
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for send cycle of 500 µs
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for send cycle of 1 ms
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for send cycle of 2 ms
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for send cycle of 4 ms
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With IRT and parameterization of "odd"
send cycles
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for send cycle of 250 µs
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for send cycle of 500 µs
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for send cycle of 1 ms
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for send cycle of 2 ms
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for send cycle of 4 ms
Technical specifications
6ES7518-4AX00-1AB0
Yes
Yes
Yes; Requirement: IRT and isochronous mode
(MRPD optional)
Yes
Yes; per user program
Yes; Max. 32 PROFINET devices
512; In total, up to 1 000 distributed I/O devices
can be connected via AS-i, PROFIBUS or PROFINET
64
512
512
8; in total across all interfaces
8
The minimum value of the update time also de-
pends on communication share set for PROFINET
IO, on the number of IO devices, and on the
quantity of configured user data
125 µs
187.5 µs
250 µs to 4 ms
500 µs to 8 ms
1 ms to 16 ms
2 ms to 32 ms
4 ms to 64 ms
Update time = set "odd" send clock (any multiple
of 125 µs: 375 µs, 625 µs ... 3 875 µs)
250 µs to 128 ms
500 µs to 256 ms
1 ms to 512 ms
2 ms to 512 ms
4 ms to 512 ms
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