Device Functions Proline Promass 83 MODBUS RS485 7 Block OUTPUTS
Endress+Hauser 79
Function description
OUTPUTS → PULSE/FREQUENCY OUTPUT 1 → CONFIGURATION (PULSE)
ASSIGN PULSE
MODBUS register:
Data type:
Access:
4221
3223
Integer
read/write
! Note!
Function is not available unless the PULSE setting was selected in the
OPERATION MODE function (4200).
Use this function to assign a measured variable to the pulse output.
Options:
0 = OFF
2 = MASS FLOW
5 = VOLUME FLOW
6 = CORRECTED VOLUME FLOW
Advanced selection: with the optional SW package CONCENTRATION
11 = TARGET MASS FLOW
13 = TARGET VOLUME FLOW
15 = TARGET CORRECTED VOLUME FLOW
16 = CARRIER MASS FLOW
18 = CARRIER VOLUME FLOW
20 = CARRIER CORRECTED VOLUME FLOW
Factory setting: MASS FLOW
! Note!
If you select OFF, the only function shown in the CONFIGURATION function
group is this function, in other words ASSIGN PULSE (4221).
PULSE VALUE
MODBUS register:
Data type:
Access:
4222
3224
Float
read/write
! Note!
Function is not available unless the PULSE setting was selected in the
OPERATION MODE function (4200).
Use this function to define the flow at which a pulse is triggered. These pulses can
be totaled by an external totalizer, and the total flow quantity since measuring
started can be registered in this way.
User input: 5-digit floating-point number, [unit]
Factory setting: Depends on nominal diameter
! Note!
The appropriate unit is taken from the UNIT MASS FLOW (0400), UNIT
VOLUME FLOW (0402) or UNIT CORRECTED VOLUME FLOW (0404)
function (see Page 15 to Page 18).
PULSE WIDTH
MODBUS register:
Data type:
Access:
4223
3226
Float
read/write
! Note!
Function is not available unless the PULSE setting was selected in the
OPERATION MODE function (4200).
Use this function to enter the pulse width of the output pulse.
User input: 0.05 to 2000 ms
Factory setting: 100 ms
Pulse output is always with the pulse width (B) entered in this function. The
pauses (P) between the individual pulses are automatically configured. However,
they must at least correspond to the pulse width (B = P).
A0001233-EN
Fig. 29 : Pulse Width
B = Pulse width entered (the illustration applies to positive pulses)
P = Pauses between the individual pulses
(continued on next page)
B
=
P
B
P
P
B
B
<
P
tt
transistor transistor
conducting
nonconducting
conducting
nonconducting
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