Hach si792 T, User Manual, Page: 69 / 116

Operation—Profibus PA
67
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
Table 13
on page 68 for Profibus communication parameters in case of errors.
Select Sensocheck
CHECK ON
Continuous Sensocheck evaluation of
sensor function
CHECK OFF (default)
Enter Profibus address 2
Edit 0001–0126 BUS (default: 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)