Kipp&Zonen COMBILOG Data Logger - Manual (Page 82)

8 MASTER FUNCTION
8.1 Master Function
The two interfaces and the master function of the
COMBILOG 1022 allows a configuration of a complex
measurement system. In such a system with activated master
function the data logger as master is able to read out the other
bus users (slaves)
This feature is used to extend the number of inputs and outputs
of the COMBILOG 1022 in case the 8 analogue inputs and
6 digital inputs/outputs of the data logger are not sufficient.
Other COMBILOG 1022 can be connected to the RS-485 inter-
face as slaves. The master data logger reads out the measured
values (actual instantaneous values only!) of the slave modules
automatically via the bus and stores them in its memory . By
this method complex systems to record up to 92 channels can
be realised easily.
The advantage of this master function is a flexible distribution
of a number of inputs and outputs and the sensors can be loc-
ated in an area over some kilometres. The data storage is cent-
ral in the master data logger.
These data can be read out directly via the RS232 interface or
via telephone or GSM modem.
Arrangement of such a measurement system with
COMBILOG 1022 and slave modules is described by following
steps:
Hardware Manual COMBILOG 1022 82