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Instruction Manual
760008-A
September 2001
3-30 Operation Rosemount Analytical Inc. A Division of Emerson Process Management
Model NGA 2000 TO2
Communication protocol:
AK
MODBUS RTU
None (not applicable to TO2)
NOTE:
The “special protocol definitions…”
line accesses a submenu for setting
the parameters of the AK and MODBUS
TRU communication protocols.
The value can range from 1 to 50.
d. Relay Outputs Setup
From menu System SIO Module (Figure
3-25), select Relay outputs setup…
Select the “Configuration of relay out-
puts…” line in the “Local SIO Configura-
tion Parameters” menu to change to the
submenu “Relay Output Setup” to attach
signals to the relay outputs.
There are three relays on the SIO board.
The contact logic can be set with a jumper
on the SIO board to select NO (normally
open) or NC (normally closed). Full details
of the SIO board are contained in its own
manual.
The three lines displayed at the bottom of
the “Relay Outputs Setup” menu show the
current status of the selected relay output.
Signal comes from: The module chosen
from the “Choose Source Module” menu.
Signal name: The signal chosen from the
“Choose Signal” menu.
Actual status: The current status of the
singal; Off or On.
Output number:
Corresponds to the relay number 1-3.
Invert signal:
“Disabled” signal is normal, “Enabled”
signal is inverted.
Choose source module..
Brings up menu shown below.
Choose desired source module for the
relay output number (1-3) being config-
ured.
The list of modules will depend on the in-
stalled modules.
TO2 37.50 ppm
Measure
Back…
-- AK Protocol Definitions --
Device address (RS-485 only): 1
TO2 37.50 ppm
Measure
Back…
-- Relay Outputs Setup --
Output number: 1
Invert signal: Disabled
Choose source module…
Choose signal…
Signal comes from: Control Module
Signal name: Failure
Actual status: Off
TO2 37.50 ppm
Measure
Back…
-- Choose Source Module --
Control module: 0.0
TO2: 1.0
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