Chapter
3
Ethernet/IP Communications
A/B Logix PLCs That Support Ethernet/IP I/O Messaging
With this release only Allen-Bradley PLCs that are Ethernet/IP ready (i.e., Logix
series PLCs) are supported using implicit messaging. Table 3–1 details the
Controllers with required Interface modules that support Ethernet/IP Implicit
(i.e., I/O) messaging.
TABLE 3–1.
Memory
Cat. No.
(max)
1769
1.5 Mbytes
CompactLogix
1768
3 Mbytes
CompactLogix
FlexLogix
512 Kbytes
ControlLogix
8 Mbytes
SoftLogix5800
PC dependent
Two blocks are defined that allow the manipulation of IO points, camera control
and status bits and user-defined data by both the PLC and the HE1610T device.
These two blocks are identical except for the size of the user-defined data, which
is either 64 bytes or 400 bytes.
The PLC manipulates the data within the block through what is called
assemblies. There are two assemblies defined, one for OUTPUT (writing to the
Binary Block of data) and one for INPUT (reading from the Binary Block of
data) as seen by the PLC. For Visionscape, the OUTPUT assembly is used to
receive/read data from the PLC and the INPUT assembly is used to send/write
data to the PLC.
3-2
Allen-Bradley PLCs That Are Ethernet/IP Ready
I/O (max)
Local I/O
30 Compact
1769
I/O modules
Compact I/O
30 Compact
1769
I/O modules
Compact I/O
512 digital
1794 FLEX
I/O
128 analog
1797 FLEX
Ex I/O
128,000
1756
digital
ControlLogix
3,800 analog
I/O
PC
none
dependent
Visionscape® Smart Camera HE1600T Guide
Programming
Programming
Software
Languages
RSLogix 5000
• relay ladder
• function block diagram
(FBD)
• structured text (ST)
• sequential function
chart (SFC)
RSLogix 5000
• relay ladder
• function block diagram
(FBD)
• structured text (ST)
• sequential function
chart (SFC)
RSLogix 5000
• relay ladder
• function block diagram
(FBD)
• structured text (ST)
• sequential function
chart (SFC)
RSLogix 5000
• relay ladder
• function block diagram
(FBD)
• sequential function
chart (SFC)
RSLogix 5000
• relay ladder
C/C++
• function block diagram
routines
(FBD)
• structured text (ST)
• sequential function
chart (SFC)
Ethernet/IP
Interface
• 1769-L32E
(embedded)
• 1769-L35E
(embedded)
• 1768-ENBT
• 1788-ENBT
• 1756-EN2T
• 1756-EN2F
• 1756-ENBT
• PC Ethernet card
Rev. 1H, Mar 2009
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