Allen-Bradley Bulletin 1203 Series User Manual page 21

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Note: If you are using the DH–485 communications mode, setting
switches SW2–4, SW2–5, SW2–6. SW2–7, and SW2–8 have no
effect because this information is selected within the software.
Use SW2–5 and SW2–4 to set the parity:
SW2
O
–
8 7 6 5 4 3 2 1
O
–
8 7 6 5 4 3 2 1
O
–
8 7 6 5 4 3 2 1
Use SW2–6 to choose between 1 stop bit and 2 stop bits:
SW2
O
–
8 7 6 5 4 3 2 1
O
–
8 7 6 5 4 3 2 1
Use SW2–7 to choose between point–to–point and multi–drop:
SW2
O
–
8 7 6 5 4 3 2 1
O
–
8 7 6 5 4 3 2 1
Use SW2–8 to choose between BCC checksum mode and CRC
checksum mode:
SW2
O
–
8 7 6 5 4 3 2 1
O
–
8 7 6 5 4 3 2 1
Installation 2–7
Function
Parity disabled
Even parity
Odd parity
Function
1 stop bit
2 stop bits
Function
Point–to–point
Multi–drop
Function
BCC Checksum
CRC Checksum
1203–5.5 September 1995