Hach-Lange SI792 P, SI792x P, SI792x P-FF, SI792x P-PA User Manual - Manual (Page 67)

Operation—Profibus PA
65
7.2 Profibus 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 17
on page 66 for Profibus communication parameters.
Select the calibration mode
-01-BUF
Knick /Mettler
Toledo
Calibration mode:
Automatic with Calimatic
-02-BUF
Merck Titrisols,
Riedel Fixanals
-03-BUF Ciba (94)
-04-BUF
NIST technical
buffers
-05-BUF
NIST standard
buffers
-06-BUF
(default)
HACH buffers
-07-BUF
WTW technical
buffers
-08-BUF Hamilton
DAT
Direct entry of zero and slope of
premeasured electrodes
MAN
Calibration with manual buffer
entry
Enter cal timer interval
0000–9999 h (default: 0000 h (Off))
Enter Profibus address
Edit 0001–0126 (default: 0126)
Make sure that the transmitter is
not communicating via Profibus
7.1.2 Configuration menu (continued)