Siemens SIMATIC CM35, Manual, Page: 94 / 144

6-7
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
6.3 Starting and Stopping the Measuring Channels
After parameterizing the module, you can start and stop the individual mea-
suring channels of the CM35. To do this, write the start/stop block to address
² module start a 2. ²
Table 6-6 shows the contents of the start/stop block. The required assign-
ment of the coordination byte is entered as an initial value in the structure.
For a description of the bit assignment of the coordination byte, see chapter
4.3.1.
Table 6-6 Start/stop block
Address Name Type Initial Value Commentary
Start_Stop_Block STRUCT
+0.0 Start_Stop_Chan_1 BOOL FALSE 0: Stop channel
1 S
h l
+0.1 Start_Stop_Chan_2 BOOL FALSE
1: Start channel
+0.2 Start_Stop_Chan_3 BOOL FALSE
+0.3 Start_Stop_Chan_4 BOOL FALSE
+0.4 Start_Stop_Chan_5 BOOL FALSE
+0.5 Start_Stop_Chan_6 BOOL FALSE
+0.6 Start_Stop_Chan_7 BOOL FALSE
+0.7 Start_Stop_Chan_8 BOOL FALSE
+1.0 CoordinationByte BYTE B#16#82 Start/stop byte enable = 1
C bit = 0
² Period duration measurement ²
mode
=2.0 END_STRUCT
Example: The CM35 has the module start address 256.
L W#16#0382 // Start channels 1 and 2
T PQW 258 // Module start a 2
to
...
L W#16#0182 // Stop channel 2/
channel 1 still active
T PQW 258 // Module start a 2
Period Duration Measurement Operating Mode