Emerson Rosemount 1408A Reference Manual page 69

Reference Manual
00809-0200-4480
Analog signal on alarm
The transmitter automatically and continuously performs self-diagnostic routines. If a
failure or a measurement error is detected, the analog signal will be driven offscale to alert
the user. High or low failure mode is user-configurable.
Table A-1: Signal on Alarm
Level
Low
High
Analog saturation levels
The transmitter will continue to set a current that corresponds to the measurement until
reaching the associated saturation limit (and then freeze).
Table A-2: Saturation Levels
Level
Low
High
A.2.5 IO-Link specifications
IO-Link revision
1.1
Transfer type
COM2 (38.4 kBaud)
SIO mode
Yes
IO-Link master port
Class A
Minimum cycle time
6 ms
Reference Manual
Custom levels
3.5 to 4.0 mA
20.0 to 22.5 mA
Custom levels
3.5 to 4.0 mA
20.0 to 22.5 mA
Specifications and reference data
NAMUR NE43 (default)
3.5 mA (NAMUR ≤ 3.6 mA)
21.5 mA (NAMUR ≥ 21.0 mA)
NAMUR NE43 (default)
3.8 mA
20.5 mA
May 2021
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