Hach-Lange POLYMETRON 9245 User Manual - Manual (Page 84)

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User Setup
7.4.3 Test
7.5 RS485 (or PROFIBUS)
Note: If the PROFIBUS option has been installed, then the menu option will show PROFIBUS rather than
RS485, and the PROFIBUS parameters will need to be installed.
Define the attribute for the event. This is one of the 6 mA
outputs (0 to 3) or None.
The MODE can be either a Preset val or Frozen.
If a preset value is chosen, you will be required to enter the
value of the analog output that will be forced, when that event
occurs.
In the illustration left, as FLOW3 < MIN was the event chosen,
then when then the flow rate drops below the minimum
allowed, a value of 6 mA will be forced on analog OUTPUT 2.
This option allows you to enter a value into the mA field.
Press the Enter function key to force this value on all the
analog outputs. The value can then be verified with the use of
a multimeter connected to the analyzer.
Select the RS485 option to set up the parameters for the
communications protocol.
An RS-485 communications interface card can be purchased
as an option with a communications protocol of
MODBUS-JBUS.
Table 8 Communications parameters
Device N. The number of the Monec device (0-33) RS485 and PROFIBUS
Baud
Transmission speed (600, 1200, 2400, 4800, 9600 or
19200)
Only required for RS485
Parity Odd, even, or no Only required for RS485
Stop Bit 1 or 2 Only required for RS485
Swap Word
Yes or No. Yes will reverse the order of the data
transmitted
RS485 and PROFIBUS