Omron K7GE-MG User Manual page 37

Remote Monitoring by the PLC or PC
This configuration is used when performing remote monitoring of the measurement values with a PLC
or PC as the host.
When a PC is used as the host, you can
use the K7GE-MG by converting the
RS-485 to USB or Ethernet using a
commercial communications converter.
The protocol is compatible with
CompoWay/F and Modbus RTU.
The K7GE-MG does not have a function to
retain the past measurement value data.
Also, data is lost when the power is turned
OFF. Therefore, read the measurement
values when the measurement ends and
before the next measurement starts, and
before the power of the Main Unit is turned
OFF.
To know the timing of measurement end, you can use status output during measurement in the K7GE-MG. Status output
during measurement turns ON when the measurement operation starts and turns OFF when measurement ends. This
change from ON to OFF is the timing when measurement ends.
You can also use the communications commands to read the flags synchronous with the status output during
measurement.
Customization of HMI from the Touch Panel
This configuration is used when a touch panel is installed on the front panel to customize the HMI for
checking the measurement values and performing the alarm reset operation.
A connection is established with the touch panel
via the RS-485, and the touch panel is used as
the master.
The protocol is compatible with CompoWay/F and
Modbus RTU.
The K7GE-MG does not support the multi-master
system. Therefore, to further connect a host
system and perform remote monitoring, connect
the host system to the touch panel, and perform
operations such as reading the measurement
values or changing the setting parameters of the
K7GE-MG via the touch panel.
Refer to the manual of the touch panel in use for
details on communications between the host
system and the touch panel.
Insulation Resistance Monitoring Device User's Manual (N224)
Communications
31 Node max.
500 m max.
RS-485
Ethernet
Touch panel
OMRON NB-series, etc.
1 Overview
converter
PLC
USB or
Ethernet
PC
PLC
RS-485
1 - 17
PC
1