Mobatime ECO-M-DK, Instruction Manual, Page: 37 / 52

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10.5 Slave clock controlled by supervised RS485
Supervised RS485 line available on the DTS.480x timeservers offers exact time
synchronization as well as monitoring the correct function of connected slave clocks.
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If the ECO-M-DK clock should be monitored set in menu item P8 unique address
in the range 1 to 32. The value "L" means that the clocks are synchronized only
(without monitoring).
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It is necessary to register the clock under the used address in DTS.
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The time synchronization starts within a few tens of seconds after start-up.
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Failure of slave clock function is signalized by an alarm in DTS.
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On the RS485 you can use the jumper TRE - JP10 to connect the termination
resistor 120R between the signals A and B for the correct termination of RS485.