Communication Unit

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3. Communication Unit

The Communication unit menu contains the user parameters concerning the all CU. Enter from Main menu using the command Ue Enter Enter.

Communication unit:
service (d)est:00000000 (N):0
(U)cc limit:130 * 0.1V  (h)yst.:2 * 0.1V
(s)tatus:0000 (P)SWD:OFF (L)OGW:OFF (M)INP:OFF
(l)og period:86400
Time (Z)one for DST:EU Time zone DI(F)F:3600sec
            obsolete(<605) Time (z)one:69136sec
Summer time (all to zero - off):
start (1)month:3 (2)day:27
end   (3)month:10 (4)day:30
Time sync:
 (i)n:0 Sr(c):00000000 (p)eriod:0
(O)ut:0 ds(t):00000000 p(e)riod:0
P(A) dir:0000 dat(a):0000
P(B) dir:0000 dat(b):0000
Power saving:
alar(m) time:0s m(o)de:0000
(R)adio pll recovery:OFF
de(f)ault (r)ead (w)rite
(I)nit (S)ync
(q)uit
>>
service (d)est: 00000000

— The destination address for system reports. Obsolete, replaced by the menu ise setting.

(N):0

— Originating node for system reports. Obsolete, replaced by the menu ise setting.

(U)cc limit: 130

— for MR400 until fw685 and for MR25 only – intermediate voltage for Ucc (h)yst, here 13.0V.

The inserted value 255 causes the message “supply from battery” SUPPLY DROP EVT 1050 on screen and in the Event log.

Ucc (h)yst.: 2

— for MR400 until fw685 and for MR25 only – hysteresis added and subtracted to the (U)cc limit gives the up and down supply voltage for the writing to the error log, here from 12.8 to 13.2V

(s)tatus: 0000

— four hex. characters are displayed, individual bits are set by independent menu items as follows:

(P)SWD: OFF

— (s)tatus = 0x0100

  • OFF — for service purposes – set OFF

(L)OGW: OFF

— (s)tatus = 0x0002

  • ON – All statistic logs are closed and written to the flash memory while the unit supply voltage drops out.

  • OFF – Only the system error 1999 is recorded during the supply voltage drop-out.

(M)INP: ON

— (s)tatus = 0x0004, sends minute pulse on SCC2-RxC pin, i.e. Cannon DSUB37F, pin 35

— (s)tatus = 0x0004, sends minute pulse on SCC0-CD pin, i.e. Cannon DSUB9F, pin 1

(l)og period: 86400

— The time period (in seconds) after which the statistic logs are closed and recorded in the flash memory, and are then available in the log history (3 periods in all).

Summer time

From SW 5.34 version — automatically setting the interval of summer time validity. The line start contains the month and day, when summer time starts, the line end contains the month and day when it ends In this range the difference between GMT maintained in the CU and the local time, saved in the Time (z)one, is increased by 1 hour. The value of GMT remains without changes and the local time visible in the menu (s)ervice (t)ime or in the menu (s)ervice (s)tatus is shifted.

The time changes in such a way that in the day designated by line start at 02:00:00 the local time is shifted to 03:00:00 and in the day designated by line end at 03:00:00 the local time is shifted back to 02:00:00. Considering the inconstancy of the start and end data for the validity of summer time approximate data is inserted into the items start and end which can be corrected individually.

When the year entry is changed in the CU when setting the time using the (s)ervice (t)ime menu, then new initialisation should be performed in the menu (U)nit (e)dit.

Time (Z)one for DST: EU

— Time Zone Calendar for Day Light Savings

  • (E) EU — automatically setting, use (F) parameter only, the dates (1),(2),(3),(4) are counted automatically for the respective year

  • (N) NONE — manual Light Saving setting, use (z) parameter and (1),(2),(3),(4) params

Time zone DI(F)F: 3600

— difference between the local time and GMT, without influence of Daylight Savings

Time (z)one: -3600

— The number of seconds which should be added to the local time to get GMT.

Time sync

Time synchronisation messages schedule. Time-sync messages are used to synchronise the calendar time in adjacent units in a MORSE network. Two modes are used:

  1. A unit periodically requests the calendar time from a node in the neighbouring unit. This mode is mostly used, as it allows more units to be synchronised from one source.

    (i)n:0

    — No of the node which originates the time-sync request message

    Sr(c):0000000

    — address of the time source

    (p)eriod:0

    — period of time-sync requests (in seconds)

  2. A unit periodically transmits the time-sync message to the configured destination, to synchronise the calendar time in the unit which contains the destination node address. This mode saves the request message, but it is limited to one destination synchronised from one source.

    (O)ut:0

    — No of the node which originates the time-sync message

    ds(t):0000000

    — an address in the unit to be synchronised

    p(e)riod:0

    — period of time-sync messages (in seconds)

Power saving (SLEEP MODE)

From HW version 4.1. and SW 7.06 the modem MR400 can be set to the idle SLEEP mode, where power consumption drops to 2.5mA. The transition into SLEEP mode is accomplished using command (m)isc p(o)wer save or by sending service packet E02A 0001 0000 0000 1FD5. It is possible to return back to the active state in three ways:

  • when the preconfigured time elapses

  • by putting the data signal to SCC2 or SCC3 port

  • by interrupting the power supply for 15 sec or more

For a detailed description see : www.racom.eu, Support, Interface Protocols, Sleep mode.

alar(m) time:0s

– the time over which the modem stays in SLEEP mode, 10 to 3600 sec. Since fw 10.0.89.0 and hardware version 7.1 (produced since 07/2009) the alar(m) time was enlarged to 10 – 86399 sec.

m(o)de:0000

– 0001 – both the radio and modem part switch to SLEEP mode

– 0000 – only the radio part switches to SLEEP mode

Parameters for development purposes

P(A) dir:0000

— direction switching (1 means output)

dat(a):0000

— data (output pins are set, input pins are read) čteny)

P(B) dir:0000

— direction switching (1 means output)

dat(b):0000

— data (output pins are set, input pins are read) čteny)

(R)adio pll recovery:OFF

– the service parameter

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