2 profibus pa communication, Section 7.2 on, Operation—profibus pa – Hach-Lange SI792 C, SI792x C, SI792x C-FF, SI792x C-PA User Manual User Manual
Page 65: 2 configuration menu (continued)
Operation—Profibus PA
63
7.2 Profibus PA communication
Profibus uses a master/slave data exchange technique. The master
(typically a PLC) generates queries to individual slaves. The slaves, in
turn, reply back with a response to the master. A Profibus message
contains the information required to send a query or request, including
the slave address, function code, data, and a checksum. See
for Profibus communication parameters in case of errors.
Select temperature compensation
1
tc
OFF
Temperature compensation turned off
LIN (default)
Linear temperature compensation
Enter temperature coefficient:
Range: 0–19.99%/K (default: 2.00%/K)
Reference temperature = 25 °C
Enter temperature coefficient
02.00%/K (default) (xx.xx%/K)
nLF
Natural waters (to EN 27888)
–01– FCT
Ultrapure water with NaCl traces
–02– FCT
Ultrapure water with HCl traces
–03– FCT
Ultrapure water with NH
3
traces
Select Sensocheck
CHECK ON
Continuous Sensocheck evaluation of
sensor function
CHECK OFF (default)
Enter Profibus address
2
Edit
0126 BUS (default)
Range: 0001–0126
1
Temperature compensation is not available for salinity.
2
Use only when there is no bus connection. The transmitter will restart and set all
parameters to default values. Individual settings must be entered once more.
7.1.2
Configuration menu (continued)