Hanna Instruments PCA 310 - Manual (Page 57)

57
SERIAL COMMUNICATION
The PCA 310-330 have one RS485 serial communication port.
The serial communication is galvanically isolated from other
analyzer parts.
The connector configuration for RS485 is
shown in the figure aside.
Two mode of working are available for the se-
rial communication: STANDARD and GSM.
STANDARD MODE
The analyzer could be connected to PC using RS485 to RS232
converter. With the HI 92500 software the analyzer data could
be downloaded to the PC and also the analyzer parameters
could be set from PC.
To set communication as PC type, select “General Menu” -
“Serial & GSM Comm.” and set the “Type” to STANDARD.
To establish connection with the PC the baud rate, the RS485
address and the password must be matched between the ap-
plication and PCA 310-330 analyzer.
The baud rate is set in the “General Menu” - “Serial & GSM
Comm.” - “Baud Rate” menu. Available values are 1200,
2400, 4800, 9600 bps.
Analyzer address is set in the “Address” line and could be
between 0 and 32.
Note: If many analyzers are connected in a RS485 network, each
analyzer must have a unique address.
Note: While one parameter is edited by the user the PC software is
unable to modify it. Any other parameter could be modified by
the PC software.
6 – The Temperature value and units ( °C or °F)
7 – The Errors and Alarms
If many errors or alarms are present, the “<” and “>” signs
are displayed on the left or right side of the display. Selecting
another message could be done by pressing “LEFT” or
“RIGHT” arrow keys.
Pressing three time “ESC” will return in the main menu.
RS 485 RS 485
B A I I