Rockwell Automation 1794-L34 FlexLogix Controller System User Manual - Manual (Page 50)

Publication 1794-UM001G-EN-P - January 2007
50 Manage Controller Communications
Calculate Connection Use To calculate the total number of local connections the controller uses:
Remote connections depend on the communication module. The
number of connections the module itself supports determines how
many connections the controller can access through that module. To
calculate the total number of remote connections the controller uses:
Connection Type: Device
Quantity: Connections
per Device: Total
Connections:
rack-optimized connection for the local DIN rail and the extended-local DIN
rail 2 1 2
I/O module (rack-optimized connection) on local rail 0
I/O module (direct connection) on local rail 1
I/O module (rack-optimized connection) on extended-local rail 0
I/O module (direct connection) on extended-local rail 1
1788-CNx ControlNet communication card 0 0
1788-DNBO DeviceNet communication card (direct connection)
(1) 2
1788-ENBT Ethernet/IP communication card 0 0
total
(1) FlexLogix controller connection to remote DeviceNet devices are accounted for in the 2 connections to the 1788-DNBO card.
Remote Connection Type Device
Quantity Connections
per Device Total
Connections
remote ControlNet communication module
I/O configured as direct connection (none)
I/O configured as rack-optimized connection
0 or
1
remote I/O module over ControlNet (direct connection) 1
remote EtherNet/IP communication module
I/O configured as direct connection (none)
I/O configured as rack-optimized connection
0 or
1
remote I/O module over EtherNet/IP (direct connection) 1
remote device over DeviceNet
(accounted for in rack-optimized connection for optional 1788-DNBO card) 0
other remote communication adapter 1
produced tag
each consumer
1
1
consumed tag 1