A
DMINISTRATION OF THE
B
OARD
7406RC
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7406RC Slave Clock Control Board for System 7001RC - V02.03
hopf
Elektronik GmbH
Nottebohmstr. 41 • D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
6.2.2 Bit 6 – Slave Line 2 as Minute or Second Line
For pole-changing pulse operation.
In this mode the two lines of Board 7406RC are controlled as either:
2 separate minute lines or
1 minute and 1 second lines (for clocks with separate second line)
Bit 6 = 1
2 independent minute slave lines
Both lines are used to control minute slave clock chains.
The Board occupies
two line numbers
in the system.
Bit 6 = 0
1 minute line and 1 second line
The 2
nd
line of the Board is used to control the seconds’ line.
With this setting Board 7406RC occupies only
one common line number
in
the system.
6.2.3 Bit 5 - Summertime/Wintertime Changeover
For pole-changing pulse operation.
This function defines the behaviour of the lines on ST/WT changeover.
Bit 5 = 0
1 hour - stop (1h) on ST
WT changeover
The minute lines wait 1 hour after the changeover from summertime to wintertime.
The line is re-set on changeover from wintertime to summertime.
In order to prevent a data overrun, this function is automatically activated for
the minute lines in 24 hour operation, irrespective of the parameter byte
settings.
Bit 5 = 1
Updating (11/23 h forerun) on ST
WT
The minute lines are always re-set after the ST/WT changeover.
