Detailed description
2.7 Structure and functions of the basic program
Basic logic functions: PLC Basic program powerline (P3 pl)
66
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Note
If the number of PLC machine data used is increased later, then DB20 must be deleted
beforehand. To prevent such extensions in use having any effect on the existing user
program, the data in DB20 should be accessed in symbolic form wherever possible, e.g., by
means of a structure definition in the UDT.
Interrupts
400120
Delete DB 20 in PLC and restart
Explanation
DB length is not the same as the required DB length
Response
Interrupt display and PLC Stop
To correct or
avoid errors
Delete DB 20 followed by RESET
Continuation After cold restart
Example
The project in the example requires 4 integer values, 2 hexadecimal fields with bit
information and 1 real value.
Machine data:
MD14510 USER_DATA_INT[0]
123
MD14510 USER_DATA_INT[1]
456
MD14510 USER_DATA_INT[2]
789
MD14510 USER_DATA_INT[3]
1011
...
MD14512 USER_DATA_HEX[0]
12
MD14512 USER_DATA_HEX[1]
AC
...
MD14514 USER_DATA_FLOAT[0]
123.456
GP Parameter (OB 100):
CALL FB 1, DB 7 (
MCPNum :=
1,
MCP1In :=
P#E0.0,
MCP1Out :=
P#A0.0,
MCP1StatSend :=
P#A8.0,
MCP1StatRec :=
P#A12.0,
MCP1BusAdr :=
6,
MCP1Timeout :=
S5T#700MS,
MCP1Cycl :=
S5T#200MS,
NCCyclTimeout :=
S5T#200MS,
Summary of Contents for SINUMERIK 840D sl
Page 282: ...Index Basic logic functions Acceleration B2 64 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 388: ...Basic logic functions Travel to fixed stop F1 Function Manual 11 2006 6FC5397 0BP10 2BA0 52 ...
Page 962: ...Index Basic logic functions Emergency Stop N2 20 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1704: ...Constraints Basic logic functions Spindles S1 94 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1716: ...Index Basic logic functions Spindles S1 106 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 1996: ...Index Basic logic functions Tool Offset W1 208 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2150: ...Table of contents Basic logic functions Appendix 4 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...
Page 2184: ...Glossary Basic logic functions Appendix 38 Function Manual 11 2006 6FC5397 0BP10 2BA0 ...