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250 •
I/O Modules
Process Data Architecture for EtherNet/IP
AS-interface Master Module
750-655
The length of the process image of the AS-interface master module can be set
to fixed sizes of 12, 20, 24, 32, 40 or 48 bytes.
It consists of a control or status byte, a mailbox with a size of 0, 6, 10, 12 or
18 bytes and the AS-interface process data, which can range from 0 to 32
bytes.
The AS-interface master module has a total of 6 to maximally 24 words data
in both the Input and Output Process Image. Word alignment is applied.
The first Input and output word, which is assigned to an AS-interface master
module, contains the status / control byte and one empty byte.
Subsequently the mailbox data are mapped, when the mailbox is permanently
superimposed (Mode 1).
In the operating mode with suppressable mailbox (Mode 2), the mailbox and
the cyclical process data are mapped next.
The following words contain the remaining process data.
The specialty modules represent 1x 12...48 bytes input and output data and
seize 1 Instance in Class (0x67) and 1 Instance in Class (0x68).
5.3.6 System Modules
System Modules with Diagnostics
750-610, -611
The 750-610 and 750-611 Supply Modules provide 2 bits of diagnostics in the
Input Process Image for monitoring of the internal power supply.
Bit 7
The system modules seize 2 Instances in Class (0x65).
Byte Destination
Offset
High Byte
0
-
1
D1
2
D3
3
D5
...
...
max. 23
D45
Bit 6
Bit 5
Bit 4
Input and Output Process Image
Low Byte
C0/S0
D0
D2
D4
...
D44
Input Process Image
Bit 3
Bit 2
Diagnostic bit S 2
Remark
not used
Control/Status byte
Mailbox (0, 3, 5, 6 or 9 words) /
Process data (0-16 words)
Bit 1
Bit 0
Diagnostic bit S 1
Fuse
Voltage
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
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