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SW 5-6: Data Format
These two switch segments configure the bit settings for Start,
Data, Parity, and Stop.
Note: The default is 10 bits (1 Start; 8 Data; 0 Parity; 1 Stop).
Unless you have a special reason to change this, we
recommend that you leave it as is. If you do change it,
however, all the units on the installation must be
changed to match.
SW 7-8: RS-422 / RS-485 Operating Mode
SW7 determines whether the unit operates as an RS-422 or
RS-485 converter.
As an RS-422 converter, SW8 determines whether the unit
is configured for Master or Slave operation.
As an RS-485 converter, SW8 determines whether the unit
operates in RTS Control Mode or Auto Send Data Mode.
Operating modes are discussed in detail in the next section
and on p.15
Note: RS-422 is used for 4 wire hookups; RS-485 is used for
2 wire hookups.
Data Format (bits) SW5 SW6
9ONON
10 OFF ON
11 ON OFF
12 OFF OFF
Operating Mode SW7 SW8
RS-422 Master ON ON
RS-422 Slave OFF ON
RS-485 Auto Send Data Mode ON OFF
RS-485 RTS Control Mode OFF OFF