Siemens CPU 1518-4 PN/DP ODK Manual page 40

Technical specifications
Protocols
PROFINET IO controller
PROFINET IO device
SIMATIC communication
Open IE communication
Web server
Media redundancy
PROFINET IO controller
Services
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Update time with IRT
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PG/OP communication
S7 routing
Isochronous mode
Open IE communication
IRT
MRP
MRPD
PROFIenergy
Prioritized startup
Number of connectable IO devices, max.
of these, IO devices with IRT, max.
Number of connectable IO devices for RT,
max.
of these, in a line topology, max.
Number of IO devices that can be activat-
ed/deactivated simultaneously, max.
Number of IO devices per tool, max.
Update times
with send clock of 125 µs
with send clock of 187.5 µs
for send clock of 250 µs
With send clock of 500 µs
With send clock of 1 ms
with send clock of 2 ms
with send clock of 4 ms
with IRT and "odd" send clock parameter as-
signment
6ES7518-4AP00-3AB0
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes; as MRP redundancy manager and/or MRP
client; max. number of devices in the ring: 50
Yes; requirement: IRT
Yes
Yes; max. 32 PROFINET devices
512; in total, max. 1 000 distributed I/O devices
can be connected via AS-i, PROFIBUS or
PROFINET
64
512
512
8; in total over all interfaces
8
The minimum value of the update time also de-
pends on the communication component 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 to 3 875 µs)
CPU 1518-4 PN/DP ODK (6ES7518-4AP00-3AB0)
Manual, 09/2016, A5E35681108-AA