Siemens SIMATIC CM35, Manual

Page: 106 / 144

7-9
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
7.3 Starting and Stopping the Timers
After parameterizing the module, you can start and stop the individual timers
of the CM35. To do this, write the start/stop block to the address
² module
start a 2. ²
Note
The timer must be stopped with a stop command before it can be started
again.
Table 7-11 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.
Write--access to the start/stop block must be programmed as a word--access.
Table 7-11 Start/stop block
Address Name Type Initial Value Commentary
Start_Stop_Block STRUCT
+0.0 Start_Stop_Timer_1 BOOL FALSE 0: Stop timer
1 S
i
+0.1 Start_Stop_Timer_2 BOOL FALSE
1: Start timer
+0.2 Start_Stop_Timer_3 BOOL FALSE
+0.3 Start_Stop_Timer_4 BOOL FALSE
+0.4 Start_Stop_Timer_5 BOOL FALSE
+0.5 Start_Stop_Timer_6 BOOL FALSE
+0.6 Start_Stop_Timer_7 BOOL FALSE
+0.7 Start_Stop_Timer_8 BOOL FALSE
+1.0 CoordinationByte BYTE B#16#83 Start/stop byte enable = 1
Consistency bit = 0 /
timer mode
=2.0 END_STRUCT
Example: The CM35 has the module start address 256.
L W#16#F083 // Start timers 5 to 8
T PQW 258 // Module start a 2
...
...
L W#16#7083 // Stop timer 8
Timers 5 to 7 still active
T PQW 258 // Module start a 2
Timer Operating Mode