CTI Products CCU-2 Channel Control Unit User Manual

MCN Monitoring and Control Network
Comparator Display System
Channel Control Unit
CCU-2
Hardware Reference Manual
S2-61424-100
Note:
Switch settings vary
depending upon the system.
Be sure to verify switch settings
before installation
Be sure to set the rotary address switches to the
proper addresses before installing the system.
FCC Statement
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
DOC Statement
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.
This manual describes products which include copyrighted CTI Products, Inc. computer programs in semiconductor memory. CTI Products, Inc. reserves all rights for these programs, including the exclusive right to copy or reproduce the copyrighted computer programs in any form. No copyrighted computer program contained in products described in this manual may be copied, reproduced, decompiled, disassembled, or reversed engineered in any manner without express written permission of CTI Products, Inc. The purchase of products from CTI Products, Inc. shall not be deemed to grant either directly or by implication, estoppel, or otherwise, any license under the copyrights, patents, or patent applications of CTI Products, Inc., except for the normal non­exclusive, royalty fee license to use that arises by operation of law in the sale of the product.
Information contained in this document is subject to change without notice and does not represent a commitment on the part of CTI Products, Inc.
Computer Software Copyrights
No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose without the written permission of CTI Products, Inc.
Copyright 1995-2008 CTI Products, Inc. All rights reserved.
MCN, CIB, CCU, CCU-2 and MCNRCD are trademarks of CTI Products, Inc. Other trademarks referenced are properties of their respective owners.
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CCU-2 Hardware Reference CTI Products, Inc.
Standard Limited Hardware Warranty
LIMITED WARRANTY. Equipment manufactured by CTI Products, Inc. is warranted to be free from defects in material and workmanship for a period of ONE (1) YEAR from date of shipment to original purchaser. Under this warranty, our obligation is limited to repairing or replacing any equipment proved to be defective by our inspection within one year of sale to the original purchaser. This warranty shall not apply to equipment which has been repaired outside our plant in any way, so as to, in the judgment of CTI Products, Inc. affect its stability or reliability, nor which has been operated in a manner exceeding its specifications, nor which has been altered, defaced, or damaged by lightning.
CUSTOMER REMEDIES. In the event of a defect, malfunction, or failure to conform to specifications established by the seller during the period shown, the customer shall call CTI Products, Inc. to obtain a Return Authorization Number and return the product or module, shipping and insurance prepaid. CTI Products, Inc., will then at its option, either repair or replace the product or module and return it, shipping prepaid, or refund the purchase price thereof. On-site labor at the purchaser's location is not included in this warranty.
EQUIPMENT NOT MANUFACTURED BY CTI Products, Inc. Equipment not manufactured by CTI Products, Inc. is excluded from this warranty, but is subject to the warranty provided by its manufacturer, a copy of which will be supplied to you upon specific written request.
NO OTHER WARRANTIES. The foregoing constitutes the sole and exclusive remedy of the buyer and exclusive liability of CTI Products, Inc., AND IS IN LIEU OF ANY AND ALL OTHER WARRANTIES EXPRESSED OR IMPLIED OR STATUTORY AS TO MERCHANTABILITY, FITNESS FOR PURPOSE SOLD, DESCRIPTION, QUALITY, PRODUCTIVENESS OR ANY OTHER MATTER.
NO LIABILITY FOR CONSEQUENTIAL DAMAGES. WITHOUT LIMITING THE FOREGOING, IN NO EVENT SHALL CTI PRODUCTS, INC. OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER (INCLUDING, WITHOUT LIMITATION, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR FOR LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS INFORMATION, OR OTHER PECUNIARY LOSS) ARISING OUT OF THE USE OF OR INABILITY TO USE CTI PRODUCTS, INC. EQUIPMENT BY PURCHASER OR OTHER THIRD PARTY, WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE), INDEMNITY, PRODUCT LIABILITY OR OTHERWISE, EVEN IF CTI PRODUCTS, INC. HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR LOSSES. IN NO EVENT SHALL CTI PRODUCTS, INC.’S, LIABILITY EXCEED THE TOTAL AMOUNT PAID BY PURCHASER FOR THE EQUIPMENT GIVING RISE TO SUCH LIABILITY
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CCU-2 Hardware Reference
Phone: (513) 595
-
5900. (8:30 to 5:00 Eastern)
CTI Products, Inc.
Manual Revisions:
S2-61424-100 Original Release.
68-11843-100
CTI Products, Inc.
1211 W. Sharon Rd.
Cincinnati, OH 45240
4
CCU-2 Hardware Reference CTI Products, Inc.
TABLE OF CONTENTS
1. INTRODUCTION................................................................................................................7
1.1 R
EFERENCE DOCUMENTS
........................................................................................................7
2. SPECIFICATIONS..............................................................................................................8
3. INPUTS & OUTPUTS.........................................................................................................9
4. THEORY OF OPERATION ............................................................................................10
4.1 L
4.2 R
ATCH ACTION
EDUNDANT PATH APPLICATIONS
.....................................................................................................................10
........................................................................................10
4.3 LEDS....................................................................................................................................11
4.3.1 Input LEDs ....................................................................................................................11
4.3.2 Output LEDs..................................................................................................................11
4.3.3 PWR, ERR, ACT LEDs..................................................................................................11
5. OPTION SWITCHES & JUMPERS...............................................................................12
5.1 G
5.2 O
5.3 I
ROUP & MODULE SWITCHES PTION SWITCHES
NITIALIZING THE RELAYS
................................................................................................................12
.....................................................................................................13
..............................................................................................12
5.3.1 Initializing the Relays with the Front Panel Switches ..................................................13
5.4 J
UMPER OPTIONS
..................................................................................................................14
6. CONNECTORS.................................................................................................................15
6.1 J1 50-P
IN CONNECTOR PINOUT
.............................................................................................16
7. MOUNTING.......................................................................................................................17
8. OPERATION IN AN MCN NETWORK........................................................................18
9. TROUBLESHOOTING....................................................................................................19
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CCU-2 Hardware Reference CTI Products, Inc.
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CCU-2 Hardware Reference Introduction CTI Products, Inc.
1. Introduction
The CCU-2 Channel Control Unit is used to control functions in a Land Mobile Radio System such as:
Main / Standby System Selection
The CCU-2 module allows up to six independent consoles to control a common function. It allows all the consoles to force the function to Main or Standby and provides feedback to the consoles to indicate the state of the function. If one console fails, the other may continue to control the system functions.
The CCU-2 module provides status indication of each function on the MCN (Monitoring and Control Network), similar to a CIB module. It also allows the function to be forced from a PC running the MCN Remote Comparator Display (MCNRCD) software.
The CCU-2 module is an MCN GPIO-1208L General Purpose I/O Module with special firmware.
A
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7
6
5
4
3
2
IN
OUTNETWORK
B
1 2 3 4 5 6 7 8 9 10 1112
PWR ACT
8
9
8
9
8
9
A
B
C
D
E
F
0
1
7
A
7
A
B
6
B
6
5
4
3
2
C
5
C
D
4
D
E
3
E
F
2
F
0
1
0
1
123 4
ON
ERR
SVC
RESETDC IN OPTIONMODULEGROUP
Front View
Figure 1 – CCU-2 Module
1.1 Reference Documents
1. Monitoring and Control Network System Manual Part Number S2-60425
J1
Rear View
E1 A
E1 B
CA-80851-100
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CCU-2 Hardware Reference Specifications CTI Products, Inc.
2. Specifications
Size 5.5” x 4.2” x 1.5”
(140 x 107 x 38 mm) Weight 19 oz (540 gm) Temperature 0 – 50 ºC Humidity 10 - 95% non-condensing Module Power +15 to +30 VDC Inputs 6 sets of Force A & Force B inputs
Opto-isolated, unidirectional.
External voltage required. Input Levels (across inputs) Inactive: < 0.5 VDC across inputs
Active: 5 to 30 VDC Input Trigger Transition Polarity (Force A or Force B) Fault Tolerance A proper input transition on a Force A
Input Impedance: 5 K Ohms, min Number of Sections Supported 1 Section Outputs (for control or feedback) 8 Form C Relays, magnetically latched.
Output Contacts Bifurcated, Gold flashed
Maximum Power Dissipation 2 Watts Input/Output Connection 50 pin Telco style Network Connector (2) RJ-45 (1 in, 1 out)
On leading edge
(from Inactive to Active)
or Force B input will override other
inputs, even those stuck active.
All driven in parallel
Low level (20 uA, 20 mV) to
24 VAC/VDC, 1 A Max., Resistive
Contacts used in applications which
cause contact arcing (typically
inductive, capacitive, or lamp circuits or
circuits with over 12V and 250 mA)
will not be suitable for switching low
level signals.
Table 1 - Module Specifications
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CCU-2 Hardware Reference Specifications CTI Products, Inc.
3. Inputs & Outputs
Figure 2 shows the equivalent circuits of the CCU I/O pins.
Figure 2 - I/O Equivalent Circuit
The function of the 12 inputs is as follows:
Input Function
1 Force A 1 2 Force A 2 3 Force A 3 4 Force A 4 5 Force A 5 6 Force A 6 7 Force B 1 8 Force B 2 9 Force B 3 10 Force B 4 11 Force B 5 12 Force B 6
Outputs are pinned out so that adjacent relays can control audio pairs.
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CCU-2 Hardware Reference Switches & Jumpers CTI Products, Inc.
4. Theory of Operation
The CCU-2 contains the following:
A Single Latching Section with 8 Form C Outputs (6) Force A Inputs (6) Force B Inputs
4.1 Latch Action
The latch is set to the A or B position by the Force A and Force B inputs as follows:
Input Transition Latched State
Force A x Inactive to Active A Force B x Inactive to Active B
The CCU-2 will take action only on a transition of an input from Inactive to Active. If an input is stuck Active or Inactive, it will not prevent another input from switching the state of the latch. This provides fault tolerance for stuck (or open) inputs.
Since the relays are magnetically latched relays, they will hold their state even when the power to the CCU-2 module is off. Upon Power-up or Reset, the CCU will ignore the inputs for approximately 1 second to allow the inputs time to settle.
Status bits provide feedback to PCs on the MCN network. Depending upon the Display Table used for the particular function, the state of the output(s) and / or the input(s) can be seen.
Control bits provide input from PCs on the MCN network. Depending upon the Display Table used for the particular function, the operator may force the latch to the A or B state.
4.2 Redundant Path Applications
Since there are 6 pairs of inputs, the CCU-2 may be used in applications that have multiple paths for the Force A and Force B signals. For instance, you could set up three consoles with redundant paths as follows:
Console Path Force A Input Force B Input
1 Forward ForceA1 ForceB1 1 Reverse ForceA2 ForceB2 2 Forward ForceA3 ForceB3 2 Reverse ForceA4 ForceB4 3 Forward ForceA5 ForceB5 3 Reverse ForceA6 ForceB6
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CCU-2 Hardware Reference Switches & Jumpers CTI Products, Inc.
4.3 LEDs
The CCU-2 has input and output LEDs.
Input LEDs
Output LEDs
IN
4.3.1 Input LEDs
The left-side "A" LEDs are the input LEDs, one for each input. LED On Input Active LED Off Input Inactive
The input LED mapping is as follows:
LED Function
A1-A6 ForceA1 – Force A6 A7-A12 ForceB1 – ForceB6
The input LEDs will all blink on upon power-up as a self-test.
4.3.2 Output LEDs
Output LEDs indicate the state of each of the 8 outputs: LED On Output A LED Off Output B
A
111210987654321
OUTNETWORK
1 2 3 4 5 6 7 8 9 10 1112
8
9
7
A
B
6
5
4
E
3
F
2
0
1
B
PWR ACT
SVC
ERR
8
8
7
6
5
C
4
D
3
2
1
9
9
7
A
A
F
0
B
6
B
E
C
5
C
D
4
D
E
3
F
2
0
1
123 4
ON
RESETDC IN OPTIONMODULEGROUP
Since all relays are driven to the same state, the output LEDs should be all on or all off.
4.3.3 PWR, ERR, ACT LEDs
The CIB has three additional LED indicators on the front panel.
PWR On when sufficient power is present Blinks when the voltage is low.
ERR 1 Blink: Group:Module set to FF:F (Invalid address) 2 Blinks: Improper internal daughter boards detected Solid On: Other error (hardware or software)
ACT On: Connected to a PC running MCNRCD software
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CCU-2 Hardware Reference Switches & Jumpers CTI Products, Inc.
5. Option Switches & Jumpers
Addressing and option switches are provided for module configuration. The module must be power cycled or reset after these switches are set so that the options will take effect. Press the Reset toggle switch down to reset the module.
A
111210987654321
IN
OUTNETWORK
5.1 Group & Module Switches
The Group and Module rotary selector switches are used to set the node address during module installation. Each module must have a unique Group:Module address. Refer to the Monitor and Control Network System Manual for details about address planning or the Custom System Configuration documentation for pre-assigned addresses if your system is a Custom Engineered system.
SWITCH DESCRIPTION DEFAULT
GROUP unit address setting (00-FE)
refer to the MCN System Manual
MODULE unit address setting (0-F)
refer to the MCN System Manual
Table 2 – Group & Module Switches
1 2 3 4 5 6 7 8 9 10 11 12
8
7
6
5
4
3
2
1
B
8
9
9
A
B
C
D
E
F
0
7
7
A
6
B
6
5
C
5
4
D
4
3
E
3
2
F
2
0
1
PWR ACT
ERR
8
9
A
B
C
D
E
F
0
1
123 4
ON
SVC
RESETDC IN OPTIONMODULEGROUP
00
0
5.2 Option Switches
The Option switches allow the technician to pre-set the relay outputs.
OPTION
SWITCH
1 Not used Down 2 Not used Down 3 Reset Initial State See Table 4 Down 4 Reset Initialize Enable See Table 4 Down
Option Switches 3 & 4 are used to select the initial state at power-up and reset:
SW3 SW4 Initial State on Power Up or Reset Default
Down Down Do not re-initialize. Use last stored state. X Up Down Do not re-initialize. Use last stored state. Down Up Initialize to State B (LEDs Off) Up Up Initialize to State A (LEDS On)
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DESCRIPTION Notes Default
Table 3 - Option Switches
Table 4 – Initial State on Reset
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CCU-2 Hardware Reference Switches & Jumpers CTI Products, Inc.
5.3 Initializing the Relays
The relays in the CCU-2 are magnetically latched and will retain their state when power is off. The normal state will be all On or all Off.
If the relays come up in a random pattern when the power is initially applied, it is probably because the relays were jarred during transport or installation.
There are two ways to initialize the relays:
1. Use the normal Force A or Force B inputs to set the latch to state A or B.
This is easiest way to initialize the relays if you have the CCU connected to the system.
2. Use the front panel switches to initialize the relays.
You can use this method if you don't yet have the CCU-2 connected in the system.
5.3.1 Initializing the Relays with the Front Panel Switches
To initialize the relays to state A:
1. Set switches as follows:
3 Up 4 Up.
2. Press the Reset Switch down and wait for 2 seconds.
3. The CCU-2 (and all the relays) should go into State A.
All the output LEDs should be On.
4. Set switches as follows:
3 Down 4 Down
5. Press the Reset Switch down and wait for 2 seconds.
6. The CCU-2 (and all the relays) should STAY in State A.
All the output LEDs should be On.
To initialize the relays to state B:
1. Set switches as follows:
3 Down 4 Up.
2. Press the Reset Switch down and wait for 2 seconds.
3. The CCU-2 (and all the relays) should go into State B.
All the output LEDs should be Off.
4. Set switches as follows:
3 Down 4 Down
5. Press the Reset Switch down and wait for 2 seconds.
6. The CCU-2 (and all the relays) should STAY in State B.
All the output LEDs should be Off.
Both procedures assume that you want the CCU-2 to maintain the last state on power up. If you want the CCU-2 to always start up in State A or State B, use the appropriate switch settings from table Table 4 in steps 4 above.
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CCU-2 Hardware Reference Switches & Jumpers CTI Products, Inc.
5.4 Jumper Options
Figure 3 shows the jumper options on the rear of the unit.
E1 A
E1 B
CA-80024-100
Figure 3 - Jumper Options
Neither of the jumper positions is connected on this unit.
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CCU-2 Hardware Reference Connectors CTI Products, Inc.
6. Connectors
The NETWORK IN/OUT ports on the front of the CCU are used to connect the CCU with other MCN modules. These ports carry both the network data signals as well as DC power for power distribution with other modules. Table 5 gives the pinout for these connectors. Figure 4 shows the location of pin 1 for each port.
PRODUCTS, INC.
IN
PIN 1
NETWORK
OUT
DC IN
CA-80068-100
Figure 4 - Network IN/OUT Ports
Pin Function
1 DATA + 2 DATA ­3 + POWER 4 No Connect 5 No Connect 6 - POWER 7 - POWER 8 + POWER
Table 5 - Network Connector Pinout
The DC IN port provides the primary power connection to the module. Power is distributed through the NETWORK OUT connector to provide power to the NETWORK IN connector of the MCN unit it is connected to. Each power supply can power up to four units total. See reference 1 for complete details of connections to the network and DC IN connectors.
The Network In connector can be used for input power even if the CCU-2 module will not be connecting to a PC. Be sure that its Group & Module address are set so that the address doesn't conflict with any other modules in the system.
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CCU-2 Hardware Reference Connectors CTI Products, Inc.
6.1 J1 50-Pin Connector Pinout
Connector J1 provides the discrete I/O signals. The following tables show the pinouts in Punch-Block order.
J1 Pin In/Out CCU-2 Module Signal Front Panel LED
26 In Force A1+ A1
1 In Force A1- A1
27 In Force A2+ A2
2 In Force A2- A2
28 In Force A3+ A3
3 In Force A3- A3
29 In Force A4+ A4
4 In Force A4- A4
30 In Force A5+ A5
5 In Force A5- A5
31 In Force A6+ A6
6 In Force A6- A6
32 In Force B1+ A7
7 In Force B1- A7
33 In Force B2+ A8
8 In Force B2- A8
34 In Force B3+ A9
9 In Force B3- A9 35 In Force B4+ A10 10 In Force B4- A10 36 In Force B5+ A11 11 In Force B5- A11 37 In Force B6+ A12 12 In Force B6- A12 38 Out Output 1 Com B1 13 Out Output 2 Com B2 39 Out Output 1 A B1 (On) 14 Out Output 2 A B2 (On) 40 Out Output 1 B B1 (Off) 15 Out Output 2 B B2 (Off) 41 Out Output 3 Com B3 16 Out Output 4 Com B4 42 Out Output 3 A B3 (On) 17 Out Output 4 A B4 (On) 43 Out Output 3 B B3 (Off) 18 Out Output 4 B B4 (Off) 44 Out Output 5 Com B5 19 Out Output 6 Com B6 45 Out Output 5 A B5 (On) 20 Out Output 6 A B6 (On) 46 Out Output 5 B B5 (Off) 21 Out Output 6 B B6 (Off) 47 Out Output 7 Com B7 22 Out Output 8 Com B8 48 Out Output 7 A B7 (On) 23 Out Output 8 A B8 (On) 49 Out Output 7 B B7 (Off) 24 Out Output 8 B B8 (Off) 50 nc 25 nc
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CCU-2 Hardware Reference Mounting CTI Products, Inc.
7. Mounting
Various mounting kits are available to mount the CCU-2 module.
Mounting Kits
Rack Mount - 4 A size modules 1 Rack Unit (1.75") High Rack Mount - 2 A size modules plus 1 B size module 1 Rack Unit (1.75") High (Used to mount 2 CCUs and 1 EXB module.)
Refer the reference 1, section Mounting Options, for physical details about mounting the CCU module.
S2-60435
S2-60443
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CCU-2 Hardware Reference Troubleshooting CTI Products, Inc.
8. Operation in an MCN Network
The CCU-2 module can operate in stand-alone mode with just connections to its 50 pin I/O connector and no connection to the MCN network. However, if it is used in a system with one or more PCs running MCNRCD software it may be monitored & controlled from those PCs.
A special set of Default files is available for use with MCN Config configuration program for the CCU-2. Special items include: Module Type: CCU-2 Display Tables CCU Input A, CCU Input B, CCU Output
The CCU Module configuration will include the following I/O points in the MCN Config program:
I/O Point Name Display Table
1 Force A 1 CCU Input A 2 Force A 2 CCU Input A 3 Force A 3 CCU Input A 4 Force A 4 CCU Input A 5 Force A 5 CCU Input A 6 Force A 6 CCU Input A 7 Force B 1 CCU Input B 8 Force B 2 CCU Input B 9 Force B 3 CCU Input B 10 Force B 4 CCU Input B 11 Force B 5 CCU Input B 12 Force B 6 CCU Input B 13 Output 1 CCU Output 14 Output 2 CCU Output 15 Output 3 CCU Output 16 Output 4 CCU Output 17 Output 5 CCU Output 18 Output 6 CCU Output 19 Output 7 CCU Output 20 Output 8 CCU Output
The inputs will show the state of the external Force A and Force B inputs.
The output points will show the states of the 8 relays. (All relays should show the same state).
The state of the latch may be changed by forcing one of the outputs on or off as follows:
MCN State CCU-2 Latch State On A Off B
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CCU-2 Hardware Reference Troubleshooting CTI Products, Inc.
9. Troubleshooting
This table is a list of troubleshooting tips specific to the CCU-2 module. For additional troubleshooting tips, refer to the troubleshooting section found in the Monitoring and Control Network System Manual, reference 1.
Due to the high percentage of surface-mount components, the CCU is treated as a field replaceable unit. If any system problems are the result of a malfunctioning CCU unit, the entire unit must be replaced and returned for repair.
PROBLEM CAUSE
The PWR LED flashes The input DC voltage is low. You may have too many modules
in line. There is a voltage drop in each module and the downstream modules will each see a lower DC voltage.
The ERR LED flashes once The Group & Module switches are set to FF:F.
This is an invalid address. Set the Group & Module switches to the proper address for your system and press the Reset switch down.
The ERR LED flashes twice The CCU-2 has not detected the proper internal daughter boards.
Call the factory for an RMA.
The ERR LED is on solid Internal hardware or firmware error.
Call the factory for an RMA.
Input LEDs are stuck on An input may be stuck active. Remove the 50-pin I/O connector.
If the input LED goes off, your problem is external to the CCU.
If the input LED remains stuck on, there is an internal problem in the unit. Call the factory for an RMA.
The Output LEDs (and relays) come up in a random state on initial power-up
The relays may have been jarred during transport. Initialize the relays as described in section 5.3, Initializing the Relays above.
If this problem persists and is not due to mechanical shock on the relays, it indicates an internal problem. Call the factory for an RMA.
One of the output LEDs does not switch with the others
There is an internal problem in the unit. Call the factory for an RMA.
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CCU-2 Hardware Reference Troubleshooting CTI Products, Inc.
PROBLEM CAUSE
The CCU doesn't hold the last state on power-up or reset
The CCU holds the last state on power-up (and we need it to come up in a known state)
The PC shows the receivers from this CCU-2 module as "Offline".
The ACT LED on the CCU is off
Check Option Switch 4. If it is up, the CCU will initialize this state based upon Switch 3. See Table 4 – Initial State on Reset.
Set Switches 3 & 4 Down and reset the unit.
Check Option Switch 4. If it is down, the CCU will start up using the previous state. If you need it to start up in a known state (A or B), set the proper state on Switches 3 & 4 and reset the unit. See Table 4 – Initial State on Reset for details.
Check the MCN cabling. Also check that the CCU-2 address and the address for the CCU-2 module in the PC database match.
In an engineered system (with routers and/or EXB modules) the PC may have an improper address or the module might be installed on the wrong MCN sub-network. Check the custom system documentation for the proper settings and connections.
If you don't have a PC talking to the CCU module this is normal.
If you do have a PC that needs to connect to the CCU module, try the suggestions in the "Offline" problem above.
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