Vishay G4, Техническое руководство, Страница: 169 / 200

G4 Multi Channel Weighing Instrument
7-11
The zero correction is set when the scale is zeroed using the front panel zero button or
with zeroing command on communication. The zero tracking and the Auto Zero
functions also work on the zero correction value. The zero correction value is reset (set
to 0) when starting a new calibration, when selecting default set-up or when upgrading
(changing) the program.
Unused scales and scales with an error will display an error message instead of the
gross weight, input signal and zero correction value.
The values on screen are automatically updated every 2 seconds.
Communication
Shows status for the two serial ports, the External I/O and the Modbus TCP Slave.
The serial ports COM1 and COM2 can be ‘Not In Use’, ‘Modbus RTU Slave’ or ‘Printer.
In the example below ‘COM1:’ is not used and ‘COM2:’ is in Modbus RTU Slave mode
with address 1, 115200 baud, 8 data bits, no parity and 1 stop bit.
The communications screen is not updated automatically. Click the ‘Update’ button to
refresh the page.
Communication diagnostics.
For the External I/O the following information might be displayed:
External I/O: Off
The parameter controlling external I/O is set to Off. I.e. the external I/O is not
used.
External I/O: WAGO, Connected
The communication works correctly with the connected WAGO I/O system.
External I/O: WAGO, Connected (Com.Err.)
The G4 and the WAGO I/O system are connected but there is an undefined
communication error. This problem may be temporary or persistent. To solve the
problem: Check WAGO Fieldbus Coupler status indication LED’s. Cycle power to
WAGO.
External I/O: WAGO, Not connected
The G4 is correctly initialized but there is no communication with a WAGO I/O
system. To solve the problem: Check connection, WAGO power, WAGO and
G4 Instrument configuration etc.