Programming the FM 350-1
5.7 Programming FM 350-1 without FCs
FM 350-1 Counter module
54 Manual, 05/2011, A5E03648639-01
5.7 Programming FM 350-1 without FCs
To operate FM 350-1 without FCs, you can operate and monitor the module directly using
the control and check-back interface (user data interface.)
User data have a length of 16 bytes, starting at the module's start address.
Load commands allow you to read the check-back interface.
Transfer commands are used to write to the control interface.
Mixed use of load / transfer commands and programming with FCs is not permitted.
5.7.1 Control interface for the count modes
Control interface for the count modes
Parameter LOAD_VAL (bytes 0 to 3) has two different meanings:
● You set the L_DIRECT or L_PREPAR bit to define the LOAD_VAL parameter as load
value.
● You set the C_DOPARA bit in byte 0 to define the reaction of outputs DO0 and DO1.
Bytes 1 and 2 define the hysteresis and pulse duration.
Table 5- 12 Control interface for count modes (outputs)
Offset to the start
address
Parameters Meaning
Bytes 0 to 3 LOAD_VAL Load value; direct and preparatory loading with bit L_DIRECT
Load value; preparatory loading with bit L_PREPAR
You set the bit C_DOPARA to define the reaction of outputs DO0 and DO1, and
the hysteresis and pulse duration
Bit 3 Bit 2 Bit 1 Bit 0 Reaction of output DO0
x 0 0 0 Inactive
x 0 0 1 Active within the range from comparison value
to overflow
x 0 1 0 Active within the range from comparison value
to underflow
x 0 1 1 Active on reaching the comparison value for
pulse duration (up/down)
x 1 0 0 Active on reaching the comparison value of the
up count pulse width
Byte 0 LOAD_VAL
x 1 0 1 Active on reaching the comparison value of the
down count pulse width
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