Siemens SIMATIC CM35, Manual, Page: 111 / 144

7-14
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
7.6 Reading the Status
In timer mode, you can read the status of the timers from the CM35.
For example, the user program can use this to determine which timers have
expired and start them again.
Table 7-14 shows the address for reading the status.
Table 7-14 Assignment of the output area for reading the status
Offset to the
Module
Start Address
Meaning Value Range
+0 Bit 0: Status of timer 1 0: Timer is active.
1 Ti
h i d
Bit 1: Status of timer 2
1: Timer has expired
and can be started
Bit 2: Status of timer 3
and can be started
again after a
t d
Bit 3: Status of timer 4
stop command.
Bit 4: Status of timer 5
Bit 5: Status of timer 6
Bit 6: Status of timer 7
Bit 7: Status of timer 8
Example (S7): Timer mode
- Read timer status
- The CM35 has the module start address 256.
L PIW 256 // Address = 256, timer status
T MW16 // Save status
Timer Operating Mode