Submittal Sheet

7800 SERIES S7800A2142 KEYBOARD DISPLAY MODULE
32-00110—05 32
Fig. 41. Modbus interface setup
The up and down arrow buttons are used to scroll between the two options: “Enabled” and “Disabled”. To commit the
change the right arrow button is used to tab to the “Yes” command and the OK button is pressed to save the selected
setting. If the setting should not be saved, scroll down to the “No” command and press the OK button. In both cases
control returns back to the Modbus setup menu.
The Modbus slave address can be edited by selecting the “Address” line and pressing the right arrow or OK button (see
Fig. 42). Only Modbus messages directed to this address are acknowledged and messages sent to other addresses are
ignored by this display module. An address range of 1-255 can be configured. The current address setting is displayed
when the page is initially entered.
Fig. 42. Modbus address setup
The up and down arrow buttons are used to increment/decrement the slave address digits on the edit line. The right and
left arrow buttons are used to tab between the address digit positions and the save commands on the right, “Yes” and
“No”. When the input focus is on the save commands the up and down arrow buttons scroll between “Yes” and “No”. When
the address is set to the value desired the “Yes” command is selected and the OK button is pressed to commit the change.
If the user decides not to save the displayed address, the “No” command is selected and the OK button is pressed. In both
save command cases the control returns back to the Modbus setup menu.
The Modbus baud rate (speed) can be edited by selecting the “Rate” line and pressing the right arrow or OK button (see
Fig. 43). The baud rate can be set to one of the following speeds:
• 4800 bps
• 9600 bps
• 19200 bps
• 38400 bps
• 57600 bps
• 115200 bps
The current baud rate setting is displayed when the page is initially entered.
Fig. 43. Modbus baud rate setup
The up and down arrow buttons are used to scroll through the speed choices on the edit line. The right and left arrow
buttons are used to tab to the save commands, “Yes” and “No”. When the input focus is on the save commands the up and
down arrow buttons scroll between “Yes” and “No”. When the speed is set to the value desired the “Yes” command is
selected and the OK button is pressed to commit the change. If the user decides not to save the displayed speed, the “No”
command is selected and the OK button is pressed. In both save command cases control returns back to the Modbus
setup menu.