Installing the Modules. AB Quality CompactLogix 1768-CNBR
AB Quality CompactLogix 1768-CNBR is a ControlNet interface module that allows for efficient data exchange and communication between CompactLogix controllers and other devices on a ControlNet network. It facilitates seamless integration of the CompactLogix system into larger control architectures, enabling data sharing, remote I/O access, and enhanced control capabilities.
Advertisement
Advertisement
8 CompactLogix ControlNet Interface Module
Installing the Modules
ATTENTION
This product is grounded through the DIN rail to chassis ground. Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding. Secure
DIN rail to mounting surface approximately every 200 mm (7.87 in.) and use end-anchors appropriately.
IMPORTANT
Do not use screws and DIN rail to mount the modules. It is possible to break the mounting tabs off if you screw the modules to the panel while they are on DIN rail.
Mount Modules with Screws
The steps in these instructions show how to mount the modules on DIN rail.
If you are using screws instead of DIN rail, make these changes to the instructions.
1.
Follow the steps in Mount the Module on the DIN Rail on page 10 to
connect the modules together.
2.
Use the modules as a template and mark pilot holes on your panel.
3.
Drill the pilot holes for M4 or #8 screws.
ATTENTION
Do not let metal to fall into modules while drilling. This could damage the modules.
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 9
4.
Use M4 or #8 screws to mount the modules to your panel with
1.16 Nm (10 lb-in) of torque.
5.
Ground the module on a ground bus with a dedicated Earth-ground stake.
6.
Connect the ground bus to a functional Earth-ground on the DIN rail or panel.
Refer to Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1, for additional information.
Install the DIN Rail
Mount the DIN rail in a suitable location.
Publication 1768-IN006A-EN-P - September 2007
10 CompactLogix ControlNet Interface Module
Mount the Module on the DIN Rail
1
1768-CNB Module 1768-CNBR Module
(rear)
(front)
TIP
2
31646A-M 31646AB-M
Throughout this installation instruction the graphic used for the module is the 1768-CNBR module.
b a
(rear)
(front) c
Publication 1768-IN006A-EN-P - September 2007
31647 -M
2 b
CompactLogix ControlNet Interface Module 11 a c
(rear)
(front)
31647 -M
Publication 1768-IN006A-EN-P - September 2007
12 CompactLogix ControlNet Interface Module
Mount the Power Supply on the DIN Rail
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 13
Mount the I/O Modules on the DIN Rail
1 a b d
2 c
31649-M b c a
31 6 50-M
Publication 1768-IN006A-EN-P - September 2007
14 CompactLogix ControlNet Interface Module
Connect the Module
You can connect the module to the ControlNet network by using a tap
(catalog number 1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS) or a network access cable (catalog number 1786-CP).
Refer to the ControlNet Coax Media Planning and Installation Guide, publication CNET-IN002, for additional information.
WARNING
If you connect or disconnect the communication cable with power applied to this module or any device on the network, an electrical arc can occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
TIP
Use the 1786-CP cable for temporary connections, such as programming software. For network connections and permanent connections, we recommend taps with a straight connector
(catalog number 1786-TPS or 1786-TPYS) because of the location of the BNC connectors on the bottom of the module.
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 15
Set the Network Address Switches
Use a small screwdriver to set the module’s network address switches. You must specify a unique ControlNet network address. You can select an address of 01…99.
Network Address Switches
Side of Module
NETWORK
ADDRESS
04
03
05
06
07
02
01
3
4
00
5
6
08
09
7
2
1
0
9
8
NETWORK
ADDRESS
03
04
05
02
01
00
5
3
4
2
1
0
6
7
9
8
06
07
09
08
This module’s network address is 99.
31 6 51- M
Publication 1768-IN006A-EN-P - September 2007
16 CompactLogix ControlNet Interface Module
Connect to a ControlNet Network
The 1768-CNB and 1768-CNBR modules have a network access port (NAP) available. The most common and easiest way to connect to the network is by using the a ControlNet tap. Perform the following steps to connect the module to the network by using a tap.
1.
Remove and save the dust caps from the ControlNet network taps.
ATTENTION
Do not allow any metal portions of the tap to contact any conductive material. If you disconnect the tap from the module, place the dust cap back on the straight or right-angle connector to prevent the connector from accidentally contacting a metallic grounded surface.
Segment 1 Segment 2 1768-CNB Segment 1
1768-CNBR Segments 1 and 2
Dust Cap
Dust Cap
2.
Connect the tap’s straight or right-angle connector to the module’s
BNC connector.
If your node supports Connect the tap’s connector
Nonredundant media
1768-CNB module
To the channel A connector on the module
(channel B on the 1768-CNBR module is not used)
(1)
Redundant media
•
From trunkline A to channel A on the 1768-CNBR module
•
From trunkline B to channel B on the 1768-CNBR module
(1)
While both channels are active, we recommend using channel A for non-redundant media.
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 17
IMPORTANT
On 1768-CNBR installations, make sure the correct network is connected to the correct tap connection. Reversing the tap connections will result in incorrect status display.
When you are using redundant media, connect the channel of each partner to the same network segment.
NETWORK
ADDRESS
03
04 05 06
07
02
01
00
5
09
3
4
08
6
7
2 8
1 0 9
NETWORK
ADDRESS
04
03
02
01
3
4
2
05 06
07
08
00
5
09
6
7
8
1 0 9
Segment 1
A
Tap
Segment 2
Tap
A B
Tap
31653- M
Publication 1768-IN006A-EN-P - September 2007
18 CompactLogix ControlNet Interface Module
Connecting a Laptop Computer to the Network with a 1784-PCC Card
The 1784-PCC1 cable can be connected from a laptop computer with a
1784-PCC card into any ControlNet product’s network access port (NAP) to provide access to an existing ControlNet network. A laptop computer connected through this cable is counted as a node and must have a unique network address (MAC ID) less than or equal to the maximum unscheduled node (UMAX).
1768-CNBR Module
1784-PCC1 Cable
ControlNet Link
1784-PCC Card
31654a-M
WARNING
The NAP is intended for temporary local-programming purposes only and not intended for permanent connection. If you connect or disconnect the NAP cable with power applied to this module or any device on the network, an electrical arc can occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 19
Connecting a Desktop Computer to the Network with a 1786-CP Cable
The 1786-CP cable can be connected from a desktop computer with either a
1784-PCIC or 1784-PCICS card into any ControlNet product’s network access port (NAP) to provide access to an existing ControlNet network. A desktop computer connected through this cable is counted as a node and must have a unique network address (MAC ID) less than or equal to the maximum unscheduled node (UMAX).
1768-CNBR Module 1784-PCIC or 1784-PCICS
1786-CP Cable
ControlNet Link
31654- M
WARNING
The NAP is intended for temporary local-programming purposes only and not intended for permanent connection. If you connect or disconnect the NAP cable with power applied to this module or any device on the network, an electrical arc can occur. This could cause an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
ATTENTION
Use a 1786-CP cable when connecting a programming terminal to the network through the NAP. Using a commercially available RJ-style cable could result in network failure.
Publication 1768-IN006A-EN-P - September 2007
20 CompactLogix ControlNet Interface Module
Connecting a Desktop Computer Directly to the ControlNet Network
A 1786-TPR, 1786-TPS, 1786-TPYR, or 1786-TPYS cable can be connected from a desktop computer with either a 1784-PCIC or 1784-PCICS card directly to an existing ControlNet network. A desktop computer connected through this cable is counted as a node and must have a unique network address (MAC ID) less than or equal to the maximum unscheduled node
(UMAX).
When connecting the module to a ControlNet network, you should also refer to the following documentation:
• ControlNet Coax Taps Installation Instructions, publication
1786-IN007
• ControlNet Coax Media System Planning and Installation Manual, publication CNET-IN002
TIP
For network connections, we recommend taps with a straight connector (catalog number 1786-TPS or 1786-TPYS) because of the location of the BNC connectors on the bottom of the module.
ATTENTION
If a SoftLogix5800 processor is running on the computer containing the 1784-PCIC or 1784-PCICS card, do not use the 1786-CP cable to connect the card to the ControlNet network. Instead, connect the card directly to the ControlNet network.
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 21
Confirm Installation
The three bicolor (red/green) status indicators on the module provide diagnostic information about the module and its connections to the network.
See Interpreting the Status Indicators on page 24 if the lights are in other
states.
Solid or Flashing Green
Solid Green Solid Green
L 1
L 2 /N
1768-CNB and
1768-CNBR Modules
O U T
Module Status Display -
31598-G
ControlNet Channel Status
Channel A BNC Connector
Channel B BNC Connector 31657-M
Publication 1768-IN006A-EN-P - September 2007
22 CompactLogix ControlNet Interface Module
Remove a Module
To remove or slide a module, the DIN rail connectors on the module to its left must be pulled out.
c - Off
1 b d f
2 a
O UT a e c
31658-M
Power
OU T
31659-M b
Publication 1768-IN006A-EN-P - September 2007
CompactLogix ControlNet Interface Module 23
Wait for the Lights to Turn Off Before Removing a Module
After you turn off the power, wait for all of the lights on the power supply and controller to turn off before you disconnect any modules.
IMPORTANT
When you turn the CompactLogix power supply off, make sure you wait for all status indicators on the power supply and controller to turn off before disconnecting any part from the system.
If you disconnect the CompactLogix system while the controller is still writing its program to memory, the program write will not be completed and you will lose your program.
• When you turn off the power, the controller writes its program to memory.
• If you don’t wait for the lights to turn off, you will lose your program.
Publication 1768-IN006A-EN-P - September 2007

Public link updated
The public link to your chat has been updated.
Advertisement