Endress+Hauser Proline Promass 83 - Page 60

7 Block OUTPUTS Device Functions Proline Promass 83 MODBUS RS485
60 Endress+Hauser
CURRENT SPAN
MODBUS register:
Data type:
Access:
4001
5802
Integer
read/write
For selecting the current span. The selection specifies the operational range and
the lower and upper signal on alarm.
Options:
0 = 0–20 mA (25 mA)
1 = 4–20 mA (25 mA)
3 = 0–20 mA
4 = 4–20 mA
6 = 4-20 mA NAMUR
8 = 4–20 mA US
Factory setting:
4–20 mA NAMUR
! Note!
When switching the hardware from an active (factory setting) to a passive output
signal, select a current span of 4–20 mA (please refer to the Operating Instructions
BA107D).
A0002959
Fig. 13 : Overview of current span, operational range and signal on alarm level
aCurrent span
1 Operational range (measuring information)
2 Lower signal on alarm level
3 Upper signal on alarm level
! Note!
• If the measured value exceeds the measuring range (as defined in the functions
VALUE 0_4 mA (4002) and VALUE 20 mA (4003)) a notice message is
generated (#351 to 354, current span).
• In case of a fault the behavior of the current output is according to the selected
option in the function FAILSAFE MODE (4006).
Function description
OUTPUTS → CURRENT OUTPUT 1 → CONFIGURATION
123
I[mA]
a123
0-20 mA (25 mA)
4-20 mA (25 mA)
4-20 mA
4-20 mA US
0-24mA 0 25
4-24mA
225
4 - 20.5 mA
222
3.9 - 20.8 mA
3.75 22.6
0-20 mA 0 - 20.5 mA
022
4-20 mA NAMUR
3.8 - 20.5 mA
3.5 22.6