Siemens SIMATIC S7-300 Manual For Migrating page 30

4 Hardware Migration
Counter module (FM350-2)
Table 4-16
Function in S7-300
Pulse encoder 24V + direction
Input Pulse encoder 24V without
Counter direction
signal
Incremental encoder 24V
Counting
Measuring
Function
Comparator
Hardware gate
Output DQ
Note TM Timer DIDQ 16x24V does not have the full function scope of the FM 350-2.
In many cases a solution can be offered for the same price or less, and provide a
higher update rate of the counter values. To do this, use the "count" mode in the
configuration of 8DI/8DQ.
Rapid traverse/crawl mode positioning (FM351 / FM451)
Table 4-17
Function in S7-300/S7-400
Input Incremental encoder 24V
Position
Incremental encoder 5V
Absolute SSI
Function Rapid traverse/crawl mode
Loop traverse
Output 4DQ
Note The rapid traverse/crawl method for positioning operations has lost considerable
significance on the market. Check the whether a solution with the
"PositioningAxis" technology object is more suitable for correct positioning.
Migration S7-300/S7-400 nach S7-1500
Entry ID: 109478811, V1.1,
TM Count 2x24V
TM Count 2x24V,
TM Timer DIDQ 16x24V
TM Count 2x24V,
TM Timer DIDQ 16x24V
TM Count 2x24V,
TM Timer DIDQ 16x24V
TM Count 2x24V
TM Count 2x24V
TM Count 2x24V
TM Count 2x24V
TM Count 2x24V
TM PosInput2
TM PosInput2
Example program (on
request)
User-specific amendments
2DQ on TM Count TM
PosInput
+2DQ on DQ 16x24VDC
for direction
05/2017
Solution in S7-1500
Solution in S7-1500
Comment
200kHz counter signal
200kHz counter signal/
50kHz counter signal
200kHz counter signal/
50kHz counter signal
Counting and measuring
at the same time
2 outputs
Gate start and gate stop
separately
2DQ per counter channel
Comment
200kHz input frequency
1MHz input frequency
Flexible encoder
parameter (up to 40Bit)
30