JUMO 706581 LOGOSCREEN nt Operating Manual - Manual (Page 164)

22 Configuration - Interface
164
22.2.2 Modbus master
Overview
The parameters found under Modbus master can only be set up if the Modbus
master was selected as the protocol in the RS232/RS485 interface settings.
General The timeout and polling cycle are set here. The timeout defines that time after
which the master will declare that an initiated request has an error. The polling
cycle defines the interval between requests for reading data from a slave
device.
Addr. ext.
analog value A maximum of 54 external analog inputs can be read into the paperless
recorder. The following parameters must be configured for each analog
variable.
Device address The address of the slave device from which data
are to be fetched.
Modbus address Address within the instrument.
The entry is made in decimal format.
v See the instrument documentation for the slave
device.
Number of
measurements The number of measurements to be read. The number
“1” means that one measurement is made at every
cyclical interval. If a number larger than 1 is entered,
then (commencing at the Modbus address) several
measurements will be read and automatically distributed
to the following external inputs (analog values). The
entry template will be locked for subsequent values.
Example: starting at "Ext. analog value1“, three
measurement values are read. In the menu, the settings
for “Ext. analog value 2“ and "Ext. analog value 3“ are
locked. starting at "Ext. analog value 4”, a new
arrangement can be configured.