Page 21 of 41
Rev: 2024-10-03
The backlight is the blue light and may be adjusted from fully off, or 1 to fully on at
63.
The contrast may be adjusted from 17 to 37.
6.4 Communications Setup (MODBUS configuration)
1) Press CFG once; screen will change to CONFIG SCREEN
2) On the CONFIG screen, the selections are
• Pump Config
• System Config
• Display Options
• Communications
3) Press ↓ until the selection arrows are pointing to the “Communications” option
and then press Selct
4) The CONFIG – COMM screen presents the following choices
• Modbus Address xxx
• Baud Rate 9600
5) Press Exit to get back to the CONFIG – SYSTEM screen
6) Press Exit a second time to get back to the normal run screen (or first user-
interface screen, Figure 8)
6.4.2 MODBUS Address
1) Press Selct when the selection arrows are pointing to “Modbus Address” and
adjust the MODBUS address value This should be a unique address on the RS-
485 bus that this controller will respond to. It can range from 1 to 240. For more
information consult with the administrator of the MODBUS / RS-485 system.
2) Press ENTER to lock in (and save) the value
6.4.3 Baud Rate
1) Press ↓ and Selct to adjust the baud rate, baud rate options are:
• 9600
• 19200
• 38400
• 57600
• 115200
Note: the 115200 setting should be reserved for very short runs of the RS-485 bus.
Only the 9600 baud option has been thoroughly tested and all other values should
be used with caution.
2) Press Enter to lock in and save the value
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