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
Содержание SIMATIC S7-300 FM 350-1
Страница 8: ...Table of contents FM 350 1 Counter module 8 Manual 05 2011 A5E03648639 01 ...
Страница 168: ...Encoder signals and their evaluation 8 4 Signal evaluation FM 350 1 Counter module 168 Manual 05 2011 A5E03648639 01 ...
Страница 186: ...Technical data 11 2 Technical data FM 350 1 Counter module 186 Manual 05 2011 A5E03648639 01 ...
Страница 188: ...Replacement parts FM 350 1 Counter module 188 Manual 05 2011 A5E03648639 01 ...
Страница 190: ...References FM 350 1 Counter module 190 Manual 05 2011 A5E03648639 01 ...
Страница 194: ...Glossary FM 350 1 Counter module 194 Manual 05 2011 A5E03648639 01 ...