ClimaCheck Gateway NX400 Hardware Manual
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2020-03-26 Page 41 of 41
Note that the labelling A and B is not standardized and the connection between the Gateway and
the other system is sometimes A to B and B to A (as in Figure 32) and sometimes A to A and B to
B.
Some of the external units, such as R560 and power meters, are powered with 24 VDC from the
panel or main housing. The + and
–
connection for the power supply is using the wires not used
for data transmission, connection 1,2,6,7,8 and 9 in Figure 33 above. If using communication
cables other than supplied by ClimaCheck make sure that these not risk short circuiting the
connection.
If 24VDC is supplied to any of the RS485 connections they will be damage.