5. PLC interface MCP 2
Festo GDCP-CMXR-F-EN 0909a
35
5.
PLC interface MCP 2
5.1
MCP2-PB
MCP2-PB includes 52-byte control signals and 52-byte status signals. MCP2-PB has
acyclically extendable commands. Signals from MCP1 and from MCP2 are transferred on
the PROFIBUS. The signals are exchanged as I/O data packets on PROFIBUS.
Data packet on PROFIBUS
MCP1 is always transferred along with MCP2.
MCP1-PB
MCP2-PB
MCP1-EA
Header
Parameters
Input data
2 bytes
10 bytes
4 bytes
48 bytes
Output data
2 bytes
10 bytes
4 bytes
48 bytes
5.1.1
Control signals
Byte
1
2
3
4
Header
CREG
CODE
SUBCODE
INDEX
Control register
Function code
Subfunction code
Data index
Bit
7
6
5
4
3
2
1
0
CREG
EXECUTE
UNAS-
SIGNED
UNAS-
SIGNED
UNAS-
SIGNED
UNAS-
SIGNED
UNAS-
SIGNED
UNAS-
SIGNED
UNAS-
SIGNED
Valid
5.1.2
Status signals
Byte
1
2
3
4
Header
SREG
CODE
SUBCODE
INDEX
Status register
Function code
Subfunction code
Data index
Bit
7
6
5
4
3
2
1
0
SREG
RETVAL
ERROR
DONE
Return value
Error bit End
Содержание CMXR-C1
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