Siemens SIMATIC S7-1200 CP 1243-8 IRC - Page 140

Configuration
4.18 Data points
CP 1243-8 IRC
140 Operating Instructions, 02/2018, C79000-G8976-C385-03
Format (memory
requirements)
Data point type
IEC type
Direction
S7 data types
Operand area
Integer (32 bits)
Bitstring of 32 bits
<7>
in
UDInt, DWord
I, Q, M, DB
Bitstring of 32 bits with time tag
CP56Time2a
1)
<33>
in UDInt, DWord I, Q, M, DB
Integrated totals
<15>
in
UDInt, DWord
I, Q, M, DB
Integrated totals with time tag
CP56Time2a
1)
<37>
in UDInt, DWord I, Q, M, DB
Bitstring of 32 bits
<51>
out
UDInt, DWord
Q, M, DB
Bitstring of 32 bits with time tag
CP56Time2a - control direction
1)
<64>
out UDInt, DWord Q, M, DB
Floating-point
number (32 bits)
Measured value, short floating point
number
<13>
in Real Q, M, DB
Measured value, short floating point
number with time tag CP56Time2a
1)
<36>
in Real Q, M, DB
Set point command, short floating
point number
<50>
out Real Q, M, DB
Set point command, short floating
point with time tag CP56Time2a
1)
<63>
out Real Q, M, DB
Block of data
(1...2 Bit)
2)
Double-point information
<3>
in
2)
DB
Double-point information with time
tag CP56Time2a
1)
<31>
in
2)
DB
Double command
<46>
out
2)
DB
Regulating step command
<47>
out
2)
DB
Double command with time tag
CP56Time2a
1) 2)
<59>
out
2)
DB
Regulating step command with time
tag CP56Time2a
1) 2)
<60>
out
2)
DB
Block of data
(1...32 Bit)
3)
Bitstring of 32 bits
3)
<7>
in
3)
DB
Bitstring of 32 bits with time tag
CP56Time2a
1) 3)
<33>
in
3)
DB
Bitstring of 32 bits
3)
<51>
out
3)
DB
Bitstring of 32 bits with time tag
CP56Time2a - control direction
1) 3)
<64>
out
3)
DB
1)
For the format of the time stamp, see the following section.
2)
For these data point types, create a data block with an array of precisely 2 bool.
3)
With these data point types, contiguous memory areas up to a size of 32 bits can be transferred. Only the S7 Bool data
type is compatible.
Format of the time stamp
Time stamps are transferred according to the IEC specification in the "CP56Time2a" format.
Note that in the frames only the first 3 bytes for milliseconds and minutes are transferred.