Siemens SIMATIC S7-300 Manual For Migrating page 31

4 Hardware Migration
Cam control unit (FM352/FM452)
Table 4-18
Function in S7-300/S7-400
Input Incremental 24V
Position
Incremental 5V
Absolute SSI
Function Position-based cams, time-
based cams
Brake cams, counter cams
Length measurement
Output DQ for cam outputs
Note
By using the TM Timer DIDQ 16x24V as output, more than 16 outputs can be
operated on one axis. If the positioning value is already available as parameter
of a technology object, new acquisition is not necessary, this saves space and
costs.
The "TO Cam" is suitable for few cams on one output.
The "TO Cam track" is suitable for outputting several cams in succession on the
same output.
Migration S7-300/S7-400 nach S7-1500
Entry ID: 109478811, V1.1,
TM Count 2x24V
TM PosInput2
TM PosInput2
Internal position value of
TO Axis
"TO cam"
"TO cam track"
User-specific amendments
TO MeasuringInput
TM Timer DIDQ 16x24V
05/2017
Solution in S7-1500 Comment
200kHz input frequency
1MHz input frequency
Saves costs and space
Available as of
TIA Portal V14
More flexibility
Available as of
TIA Portal V14
Scalable for several
outputs,
Resolution 1µs
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