Siemens SIMATIC S7-300 FM 350-1 - 9 DB Assignments

FM 350-1 Counter module
Manual, 05/2011, A5E03648639-01
169
DB assignments
9
DB for FC CNT_CTL1
All data belonging to a module channel are stored in the DB of FC CNT_CTL1. The data
structure and length of the DB are defined by UDT2. You must assign the valid data listed
below to the DB before assigning module parameters.
● Module address (address 6.0)
● Channel start address (address 8.0)
● User data length (address 12.0)
The DB was generated based on UDT2 as DB of a corresponding user-specific data type.
The resultant DB assignments are shown below.
Table 9- 1 DB assignments
Address Variable Data type Start value Comment
Count Measuring
FC parameters, addresses
0.0 AR1_BUFFER DWORD DW#16#0 AR1 buffer AR1 buffer
4.0 FP BYTE B#16#0 Flag byte Flag byte
5.0 RESERVED BYTE B#16#0 Reserved Reserved
6.0 MOD_ADR WORD W#16#0 Module address Module address
8.0 CH_ADR DWORD DW#16#0 Channel address Channel address
12.0 U_D_LGTH BYTE B#16#0 User data length User data length
13.0 A_BYTE_0 BYTE B#16#0 Reserved Reserved
Transfer area for write values
14.0 LOAD_VAL
1
DINT L#0 New load value
(write user)
Low limit
(write user)
18.0 CMP_V1
1
DINT L#0 New comparison value 1
(write user)
High limit
(write user)
22.0 CMP_V2
1
DINT L#0 New comparison value 2
(write user)
Update time
(write user)