Siemens Simatic S7-1500 / ET 200MP - Parameter data record; Parameter Data Record Assignment and Structure

Technology module TM FAST (6ES7554-1AA00-0AB0)
Equipment Manual, 04/2023, A5E52301130-AA
58
Parameter data record
B
B.1 Parameter assignment and structure of the parameter data
record
You have the option to change the parameter assignment of the module with the user
program while the CPU is in RUN. The parameters are transferred to the module using data
record 128, for example with the WRREC instruction.
If errors occur during the transfer or validation of parameters with the WRREC instruction, the
module continues operation with the previous parameter assignment. A corresponding error
code is then written to the STATUS output parameter.
The description of the WRREC instruction and the error codes is available in the section
Parameter validation error with data record 128 (Page 61) or in the online help of STEP 7 (TIA
Portal).
Note
If you want the module to be set to its startup state after writing data record 128, this must
be implemented in the TM FASTapplication (Page 41).
Structure of data record 128
The following table shows the structure of data record 128 for TM FAST. The values in byte 0
to byte 3 are fixed and may not be changed.
Table B- 1 Parameter data record 128
Bit →
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte ↓
0...3
Header
0
Reserved
1
Major Version = 0
Minor Version = 1
1
Length of the parameter data = 28
2
Reserved
1
3
Reserved
1
Basic parameters
4
Reserved
1
Reaction to
CPU STOP:
Load TM
FAST appli-
cation dur-
ing startup
2
Always
activate TM
FAST appli-
cation
2
Enable
diagnostic
interrupt on
wire break
2
Error at
digital out-
puts
2
Missing
supply volt-
age L+
2
0
B
: Disable
all outputs
1
B
: Take
over from
TM FAST
application