© 2006 Carlo Gavazzi Industri A/S. All rights reserved
77
G 3800 X036 Operation Manual
August 2006
2.6. Counter and Multiplexer
2.6.1. Multiplexer (transmission of counter values)
• Function: Control and transfer of counter values
• Application: Registration of energy and operating hours etc.
• Setup through the menu Edit, Counter and Mux Analog Setup
Description
The counter channels with the sum sign
∑
are for transmission of counter values. This multiplex trans-
mission of up to 128 counter values is dedicated to the use of the counter module G 4420 7401.
The range of values to be transmitted can be selected in the Basic setup through the option “Counter
range”. Depending on the range of values, a corresponding number of address groups is reserved,
whereby the Multiplex system is started.
Hint:
The reserved addresses must
not
be used for other purposes, eg to output switch commands.
There are no further configuration possibilities in the Configuration software - addressing of the
channels as well as transmission and saving of data is carried out automatically by the
Mastergenerator.
Module configuration
Detection of the counter values requires correct setting of the counter module G 4420 7401. Apart from
the setting the counter range, it is also necessary to assign an address to each module through rotary
switch.
Data format
A description of the used data format can be found in the user manual of the counter module G 4420 7401.
Counter value output
Access to and output of the stored counter values is only done through the Modbus communication
interface of the Mastergenerator. There are basically 3 possibilities of continued processing:
1. Representing the values in visualization software or operator panel (eg on a PC with the Dupline
Web-Server).
2. Through communication programmes, eg the Dupline DDEServer - an open software interface to
for example Microsoft® Office applications.
3. Individual reset of counter values.
Simultaneous operation with Multiplex Analog Value Transmisison
If transmission of counter and analog values is needed, care should be taken to avoid address over-
lap. The transmission channels of the analog modules must be set so that they do not overlap the
channels of the counter value transmission. Read the following chapter 2.6.2. “Multiplexer
(Transmission of analog values)”.
