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2.4.3
DI mode- NO (normal open) and Counter
The wire connection in counter and NO modes are the same. The NO mode is
used as normal open in relay application as follows. The logical value of DI is 0
when the relay is close in normal use. When the relay is triggered as relay close, the
logical value of DI is 1 and the SMS would be sent. If the counter mode is set, the
trigger signal must be maintained as 25 ms ~ 200 ms.
2.4.4
DO internal structure
2.4.5
DO wire connection
GT-530 User Manual, Version 1.0, August 2009
GT-530 user manual v1.0
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