Rockwell Automation 1760-DNET Pico DeviceNet Communications Module User Manual - Manual (Page 10)

Publication 1760-UM003A-EN-P - September 2005
1-2 Pico DeviceNet Interface
Structure of the Unit Figure 1.2
Communication Profile
• Predefined master/slave communication settings
– The I/O polling connection is used for the transfer of 3 bytes
of input data (R1 to R16) and 3 bytes of output data (S1 to S8)
between the base unit with gateway interconnection and the
DeviceNet programmable controller.
– The I/O Change of State/Cyclic connection (acknowledged,
unacknowledged) is used to transfer 2 bytes of diagnostic
data from the control relay to the DeviceNet programmable
controller.
– The explicit connection set-up is used for read/write access
to function relay parameters in the control relay. This type of
connection set-up also supports the configuration, diagnostics
and management services of the control relay.
• DeviceNet Communication adapter profile (device type 12),
which has been expanded by requests
• Group 2 server
• UCMM-capable device
• Dynamic set-up of explicit and I/O connections are possible
• Device Heartbeat Message
• Device Shutdown Message
• Offline communication settings
Hardware and Operating
System Requirements The 1760-DNET expansion unit operates together with Pico Series B
and Pico GFX-70 controllers.
MS
NS
a
b
d
e
f
c
1 Pico-Link Socket
2 5-pin DeviceNet Connector
3 24V dc Power Supply
4 Equipment Rating Plate
5 Network Status LED
6 Module Status LED