Operator Manual
Page
24
of
40
P/N 1580281
SEC3120 Digital Transmitter
Sensor Electronics Corporation
Rev 10, 20150707
the operator may create a configuration greater than ten total bits, the transceivers by default will adapt a
replacement frame that remains ten bits in length and will resemble the most common frame format.
Activating ModBus Communication - Put the SEC3120 Unit Online or Offline
Scroll down to MAIN MENU and select ENTER.
Move the cursor down to the NETWORK menu and select
ENTER.
Select ENTER on MODBUS SETTINGS to bring
up the Modbus Settings Menu.
The operator can place the unit actively
on RS485 bus, or take it off by moving
the cursor to ONLINE, selecting ENTER
and using the UP/DN arrows to change
the value between YES and NO.
Scroll down to the Modbus Settings
Menu Page 2.
Select ENTER on PREVIOUS MENU to
exit the Modbus Settings Menu and
return to the Network Settings Menu
Screen.
Scroll down to and select ENTER on PREVIOUS
MENU to return to the Main Menu Screen.
Select ENTER on SAVE CHANGES. The screen
will return to the Main Menu.
Scroll down to Main Menu Page 2.
Scroll down to and select ENTER on PREVIOUS MENU
to return to the Initial/Top Menu Screen.
Set RS485 ModBus Line Settings (Data Bits, Stop bits, Parity and BAUD)
Scroll down to MAIN MENU and select ENTER.
EJECT MEMORY CARD
ABORT WARMUP
INFO
* MAIN MENU
CALIBRATION
ALARM
RELAY
*
NETWORK
*
ONLINE
YES
SENSORS
IDENT
NET ID
SINGLE
485 BUS MENU
*
PREVIOUS MENU
NETWORK ID MENU
MODBUS SETTINGS
*
PREVIOUS MENU
CALIBRATION
ALARM
RELAY
*
NETWORK
HIDE LOW GAS
SELF TEST
SET DATE TIME
*
PREVIOUS MENU
NETWORK ID MENU
*
MODBUS SETTINGS
PREVIOUS MENU
*
SAVE CHANGES
ABORT CHANGES
*
ONLINE
YES / NO *
SENSORS
UNIQUE
NET ID
UNIQUE
485 BUS MENU
EJECT MEMORY CARD
ABORT WARMUP
INFO
* MAIN MENU
