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Table 4-2
Allocation of the control word for parameterization, continued
Bit
Address
8 to 11
Subnumber for parameter block
- - Only for ²positioning² mode
- - Not applicable to the operating modes
pulse counter, period duration measurement
and timer
12 to 15
Disregard
Example (S5)
Data transmission
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
Description
²Timer² mode/parameterization via direct I/O accesses
Write parameter block 2:
To write data
To accept data via CM35 assign W#16#0063 to control word
The parameter blocks for the parameterization of the CM35 can be written in
one of the following ways.
- - Use of data record number 1 with SFC 55 "WR_PARM"
- - Write the analog I/O address area with direct I/O accesses
The data are written with SFC 55 when the CM35 is used with SIMATIC S7.
Direct I/O write- - accesses to the data must be used for DP operation with S5
masters or standard DP masters. A consistency bit which must be specified
via the user program is available to ensure the data consistency of a parame-
ter block.
Data Communication with the CM35
Allocation
0000:
Parameter subblock 0
0001:
Parameter subblock 1 (axis 1)
0010:
Parameter subblock 2 (axis 2)
0011:
Parameter subblock 3 (axis 3)
0100:
Parameter subblock 4 (axis 4)
assign W#16#0023 to control word
4-5
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