Siemens SIMATIC S7-1200 Manual page 190

Motion control is easy
Table 10- 1 Maximum number of controllable drives
Type of CPU
CPU 1211C DC/DC/DC
AC/DC/RLY
DC/DC/RLY
CPU 1212C DC/DC/DC
AC/DC/RLY
DC/DC/RLY
CPU 1214C DC/DC/DC
AC/DC/RLY
DC/DC/RLY
Table 10- 2 Limit frequencies of pulse outputs
Pulse output
Onboard
Standard SB
High-speed (200 KHz) SBs
MC V1 instructions support a maximum frequency of 100 KHz.
1
NOTICE
The maximum pulse frequency of the pulse output generators is 100 KHz for the digital
outputs of the CPU, 20 KHz for the digital outputs of the standard SB, and 200 KHz for the
digital outputs of the high-speed SBs (or 100 KHz for MC V1 instructions). However,
STEP 7 does not alert you when you configure an axis with a maximum speed or frequency
that exceeds this hardware limitation. This could cause problems with your application, so
always ensure that you do not exceed the maximum pulse frequency of the hardware.
190
No SB installed
2
0
0
2
0
0
2
0
0
Frequency
2 Hz ≤ f ≤ 100 KHz
2 Hz ≤ f ≤ 20 KHz
MC V2 instructions: 2 Hz ≤ f ≤ 200 KHz
MC V1 instructions: 2 Hz ≤ f ≤ 100 KHz
With an SB
(2 x DC outputs)
2
1
1
2
1
1
2
1
1
1
Manual, 11/2011, A5E02486774-04
With an SB
(4 x DC outputs)
2
2
2
2
2
2
2
2
2
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