Siemens SIMATIC S7-300 FM 350-1 Manual page 70

Programming the FM 350-1
5.7 Programming FM 350-1 without FCs
Table 5- 21
In the operating mode ...
Counting
Measure
If a value is incorrect, you must first acknowledge this operator error with OT_ERR_A before
the FM 350-1 can accept any further values. You should then correct the value rejected with
the operator error and transfer it again.
Note
If you use the control bits L_DIRECT, L_PREPAR, T_CMP_V1 or T_CMP_V2 to load the
value LOAD_VAL, CMP_V1 or CMP_V2, you cannot change the parameter assignments at
the same time using the C_DOPARA control bit.
This would lead to an OT_ERR operator error that you would have to acknowledge with
OT_ERR_A.
Time Required to Transfer Values
Table 5- 22 Time Required to Transfer Values
Use of the FM 350-1
Centralized
Distributed
(non-isochronous mode)
Decentralized
(isochronous mode)
70
Simultaneous transfer of several values
Time requirement
At least 3 OB 1 cycles
At least 4 PROFIBUS DP cycles
At transmission of 4 PROFIBUS DP cycles
only one value
At simultaneous

initiation of the

transmission of
several values

... You can transfer at the same time
Load value

Comparison value 1

Comparison value 2

Low limit

High limit

Update time

For the 1st value: 4 PROFIBUS DP cycles after initiation
For the 2nd value: 5 PROFIBUS DP cycles after initiation
For the 3rd value: 6 PROFIBUS DP cycles after initiation
(Parameter LOAD_VAL)
(Parameter CMP_V1)
(Parameter CMP_V2)
(Parameter LOAD_VAL)
(Parameter CMP_V1)
(Parameter CMP_V2)
FM 350-1 Counter module
Manual, 05/2011, A5E03648639-01