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Digital clocks – NDC Series  /  User Manual v. 2.11

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Finally, connect the power supply and test the synchronisation, e.g. by allowing all other clocks except the 

Master one to have deliberately set incorrect time and letting them to by synchronised with the Mater clock 

after they are connected into the NDC net after a period set under the {SyPE} parameter.

6.2 Configuration of the network {run}

(

{MEnu}→){SEt}→{ConF}→{run}

During the configuration of the network, the ID table of devices in the NDC Master clock is zeroed. Then the 

Master clock gradually addresses to all devices (addresses) in the whole range 2 –  127. The addressed 

devices, which are physically connected to the NDC-net, return their addresses, types of device and other 

data. The Master clock records those devices gradually into its ID table of devices. On the basis of a compiled 

ID table, the Master will setup a hierarchy, timing and sequence of addressing individual devices for further 

communication.

On the clock set as the Master, select the Network Configuration, {ConF}. Then with the ▲/ ▼ buttons browse 

to {run} and confirm by pressing 

OK

. This item is not available, if the device does not have the address set to 

1. Immediately after starting the configuration, the display will go off for about 5 seconds and then, after about

7 seconds, it will display a blinking text {buSY}. When an ID table is created, the clock will show {donE} and

return to {run} in the {ConF} submenu.
During the configuration of the network, it is not allowed to:

Activate any NDC through the remote controller;

Disconnect or connect power supply to/from individual devices;

Disconnect or connect communication cables between devices;

Otherwise the ID table of devices may not correspond with the reality and the configuration may have to be 

repeated.

6.3 Viewing of the list of devices {LiSt}

({MEnu}→){SEt}→{ConF}→{LiSt}

The list of found devices (ID table) can be viewed by activating the {LiSt} item. This item is not available, if the 

NDC device does not have its address set to 1. You can browse in the list with the ▲ /▼ buttons, and thus 

display type abbreviations of all found devices. 2 seconds after the browsing is stopped the address of the 

device and its type are displayed alternately (address for 1.5 sec, type for 0.5 sec). The list of possible types 

of devices and their abbreviations is contained in the table below. The address of a device is shown in the 

{Axxx} format, where xxx is the number between 1 and 127.

Display

Type of device

{ndc}

NDC clock

{SEnS}

remote sensor

{Sync}

synchronisation device 

{SE:Sy}

synchronisation module combined with a thermal sensor

{butt}

remote input

{outP}

remote output

If there are fewer connected devices on the list than in reality, it is necessary to check:

1. Whether the missing devices have connected power supply;

2. Whether the missing devices are connected properly to the NDC net;

3. Whether the missing devices have set the same address.

7

BACKUP OF DATA DURING A POWER OUTAGE 

7.1 Time, date

The time and date 

are backed up

by a built-in backup capacitor, which allows to maintain the correct time and

date for a period of several days without power supply. When the power is connected, the electronics ensures 

continual recharging of the backup capacitor, so it does not require any maintenance.

7.2 Stopwatch

The stopwatch 

data are not backuped

, i.e. after a power outage or power up of the clock, the stopwatch data 

will always be (00:)00:00, i.e. the stopwatch will be zeroed irrespective of the condition in which it was at the 

time of the power cut.

Summary of Contents for NDC 100/4 R L20

Page 1: ...Digital clocks NDC 57 4 6 R L20 NDC 100 4 6 R L20 User Manual v 2 11...

Page 2: ...dress setting diAd 9 5 6 3 Network configuration ConF 10 5 6 4 Allocation of sensors temperature display address setting S1Ad S2Ad 10 5 6 5 Allocation of the remote button address setting PbAd 10 5 6...

Page 3: ...4 superbright 7 segment LED modules 4 88 88 57 23 NDC 57 6 6 88 88 88 57 23 NDC 100 4 4 88 88 100 40 NDC 100 6 6 88 88 88 100 40 NDC 160 4 superbright elliptic LEDs for outdoor use 4 88 88 160 70 NDC...

Page 4: ...DC net Counter counting up down Automatic switching of the display format range 1 s to 99 days 23 hours 59 minutes 59 seconds COUNT UP or COUNT DOWN mode adjustable limit Functions START STOP PAUSE RE...

Page 5: ...ndicular distance 15 m Time and date setting Activation of selected display modes time date temperature stop watch counter remote sensor intervals of alternating data display Limit and modes for the c...

Page 6: ...and a protocol converter to the NDC net Sensors Within the range of the NDC net they measure general quantities usually temperature but also humidity pressure and after their processing they send the...

Page 7: ...network The connectors are located at the back of the display and they are marked as RS485 and 17 V RS485 The type of the connector used and its connection are described in detail in the clock s circ...

Page 8: ...iod Sensor 2 reading period Stopwatch reading period tMPE dtPE CdPE S1PE S2PE StPE 15 s 5 s 0 s 0 s 0 s 0 s tIME TIME Year setting Month setting Day setting Hour setting Minute setting Shift of hours...

Page 9: ...layed when browsing in the menu Arrow buttons and are used for browsing in the menu A selected submenu should be confirmed by the OK button When the browsing stops in a submenu after 2 seconds the val...

Page 10: ...lowing items tMPE Time Period default 15 dtPE Date Period default 5 CdPE Coundown Period default 0 S1PE Sensor 1 Period default 0 S2PE Sensor 1 Period default 0 StPE Stopwatch period default 0 The ran...

Page 11: ...ed Note If the clock clock network is connected to a synchronisation device GPS receiver etc which itself provides the correction of the summer winter time this function has to be switched off on all...

Page 12: ...or there may be problems with the communication with that module If there is a synchronisation module with an integrated thermal sensor in the NDC net and there is a requirement to display its tempera...

Page 13: ...er 5 4 Data display period setting diSP If you want to ensure only the displaying of the stopwatch set the parameters for the rest of the displayed data to 0 Types NDC xxx 4 display the time measureme...

Page 14: ...he time from the set value downwards to 00 00 00 When the end of the interval is reached the built in relay is switched on while the duration of the switch on state can be adjusted In the settings it...

Page 15: ...set relay on period is 0 sec the relay will not be switched on at the selected time 2 Switching of the relay is signalized by the LED in the right lower corner after second or minute reading that is t...

Page 16: ...00 00 for counting up or the preset limit for counting down A short depressing of the button will start the time counting START a short repeated depressing will freeze the current value of the counted...

Page 17: ...ction at the set time during a day will be active And vice versa if a respective day has the OFF flag e g weekends the relay will not be switched on that day After selecting the Wda item select the re...

Page 18: ...ices Otherwise the ID table of devices may not correspond with the reality and the configuration may have to be repeated 6 3 Viewing of the list of devices LiSt MEnu SEt ConF LiSt The list of found de...

Page 19: ...r supply is resumed the relay output will be switched on immediately 8 RESET RESTORING OF ORIGINAL VALUES rSt MEnu SEt ConF rSt A reset will restore the original settings of the clock see chapter 5 1...

Page 20: ...18 10 CONNECTION DIAGRAM...

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