LOVATO ELECTRIC DMK40, Руководство пользователя программного обеспечения

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Code: MSGB202$0500.doc 18/06/2004 P. 4 / 20
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If several DMK are connected, they must be programmed with different serial communication addresses
(01, 02, 03 etc.). To set the serial communication address of the DMK, program parameter P.41.
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The communication speeds set on the PC and on the DMK must match. For the PC, the speed is
selected in the
Configuration-Options-General-Serial port settings window while, for the DMK, it is
selected with parameter P.42 (see Addendum ).
•
The connection polarity of the DMKs and of the converter to the RS-485 bus must be correct (all the A
terminals on one conductor and all the B terminals on the other).
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The maximum distance between the two most distant devices on the RS-485 bus must not exceed
1000m.
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All the converters must be correctly powered and configured (see the instructions sheets attached to the
appliances). In particular, the PC side converter must be programmed in automatic switching mode
(data).