Rockwell Automation 2755-G6-D Scanner with RS-232 Option - Manual (Page 47)

Serial Communication Parameters
Chapter 6
6–5
7 Data Bits, 2 Stop Bits, Parity Check
If your system requires a word length of 7 Data bits,
2 Stop bits, and Parity check, scan the appropriate
label below.
EH
7 Bits
O
EG
7 Bits
E
EF
7 Bits
1
EE
7 Bits
O
8 Data Bits, 1 Stop Bit, No Parity Check
If your system requires a word length of 8 Data bits,
1 Stop bit, and no Parity check, scan the label below.
EM
8 Bits