Siemens SIMATIC S7 System Manual page 720

Technical specifications
A.2 S7-200 SMART CPUs
Technical data
Switching delay (Qa.0 to
Qa.3)
Switching delay (Qa.4 to
Qc.7)
Lifetime mechanical (no
load)
Lifetime contacts at rated
load
Output behavior in STOP
Number of outputs on
simultaneously
Cable length (max.), in
meters
720
CPU ST60 DC/DC/DC
1.0 μs max., off to on
3.0 μs max., on to off
50 μs max., off to on
200 μs max., on to off
--
--
Last value or substitute value
(default value 0)
24
Shielded: 500 m
Unshielded: 150 m
CPU SR60 AC/DC/Relay
10 ms max.
10 ms max.
10,000,000 open/close cycles 10,000,000 open/close cycles
100,000 open/close cycles
Last value or substitute value
(default value 0)
24
Shielded: 500 m
Unshielded: 150 m
System Manual, V2.3, 07/2017, A5E03822230-AF
CPU CR60s AC/DC/Relay
10 ms max.
10 ms max.
100,000 open/close cycles
Last value or substitute value
(default value 0)
24
Shielded: 500 m
Unshielded: 150 m
S7-200 SMART