Options (08H); Comm Address (09H) - MSA FL500 Operating Manual
Modbus communication, flame detector
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- Operating manual (37 pages) ,
- Operating manual (34 pages)
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3.9.
Options (08H)
A Read command sends back the status of the settings for the detector sensitivity, relay time delay, relay
latching/non-latching, and relay energized/non-energized options.
The Switch Override bit must be enabled for a Write command to change the option settings.
EXCEPTION: If the Switch Override bit is not enabled when a change to an option setting is requested,
Exception Code 01 (Illegal Function) is sent back.
Position
High Sensitivity
Medium Sensitivity
Low Sensitivity
2-second Alarm Time Delay
4-second Alarm Time Delay
8-second Alarm Time Delay
10-second Alarm Time Delay
Alarm High Non-Latching
Alarm High Latching
Alarm Low Non-Latching
Alarm Low Latching
Alarm High Normal Energized
Alarm High Normal De-Energized -
Alarm Low Normal Energized
Alarm Low Normal De-Energized -
Alternate LED
HART Enabled
These functions are indicated on the Low data byte. The High data byte is not used.
3.10. Comm Address (09H)
A Read command sends back the Comm address of the FL500. A Write command changes the address.
The address range is 1 to 247 (01 to F7 hex).
When the slave address changes, Modbus communications stop until the master changes its query address
to the new slave address.
EXCEPTION: The data value must be between 1 to 0x00F7. If an illegal data value is entered, Exception
Code 03 (Illegal Data Value) is sent back.
NOTE: If you ground the Alarm Reset input during the start-up cycle (approximately 10 seconds), the
FL500 address will default to 1.
Operational Mode Command Register Details
1
2
OFF
OFF
ON
OFF
OFF
ON
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
FL500 Modbus Communication Operating Manual
Option
3
4
5
6
-
-
-
-
-
-
-
-
-
-
-
-
OFF
ON
-
-
OFF
OFF
-
-
ON
OFF
-
-
ON
ON
-
-
-
-
OFF
-
-
-
ON
-
-
-
-
OFF
-
-
-
ON
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
8
9
10
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ON
-
-
-
OFF
-
-
-
-
ON
-
-
-
OFF
-
-
-
-
-
ON
-
-
ON
-
US
13
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