Proline Promag 55 PROFIBUS PA
Commissioning
Hauser
91
CONTROL_BLOCK module
By means of the CONTROL_BLOCK module (slot 7), the measuring device is able to process device-
specific control variables from the PROFIBUS master (Class 1) in cyclic data transmission (e.g.
switching on positive zero return).
Supported control variables of the CONTROL_BLOCK module
The following device-specific control variables can be activated by changing the output byte from
0
→
x:
!
Note!
The control (e.g. switching on positive zero return) is executed by cyclic data transmission if the
output byte switches from "0" to the bit pattern in question. The output byte must always switch
from "0". A switchback to "0" does not have any effect.
Example (change the output byte)
Output data
Module
Control variables
CONTROL_BLOCK
0
→
2: Positive zero return ON
0
→
3: Positive zero return OFF
0
→
8: UNIDIRECTIONAL measuring mode
0
→
9: BIDIRECTIONAL measuring mode
0
→
24: Run UNIT TO BUS function
Control variables that are executed only if the measuring device is equipped
with the optional Electrode Cleaning Circuit (ECC)
0
→
5: ECC OFF
0
→
6: ECC ON
Control variables that are executed only if additional "Advanced diagnostics"
software is installed in the measuring device.
0
→
25: Warning mode "Advanced Diagnostics" OFF
0
→
26: Warning mode "Advanced Diagnosis" ON
0
→
60: DISPLAY_VALUE assignment density ON
0
→
61: DISPLAY_VALUE assignment density OFF
0
→
70: Start determining the user reference status
0
→
74: Acquisition mode OFF
0
→
75: Acquisition mode, PERIODICAL
0
→
76: Acquisition mode, MANUAL (SINGLE SHOT)
0
→
78: Start manual determination of the advanced diagnostics parameters
From
→
To
Result
0
→
2
Positive zero return is switched on.
2
→
0
No effect
0
→
3
Positive zero return is switched off.
3
→
2
No effect
Byte 1
Control
