Protocol, Parity (parity check), Stop bit (number of stop bits) – Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set User Manual
Page 262: Data length, Time-out

Communications
Chapter 9
9-6
PROTOCOL
Select the protocol for communications from the following options.
LEVEL_1
LEVEL_2*
DF1
RAW
PARITY (parity check)
Select the parity from the following parity check schemes:
Parity
Parity Check
NONE
No parity check
EVEN
Even parity
ODD
Odd parity
STOP BIT (number of stop bits)
Select the number of stop bits with this parameter. You can select:
1, 1.5, or 2 bits
DATA LENGTH
Select the number of bits that constitute one character with this parameter.
You can select:
7 or 8 bits
The parity bit is not counted as a data length bit.
TIME-OUT
Select the time-out value that specifies how long the control tries to
establish communications with a peripheral. If the control cannot establish
communications within the specified time-out value, an error message is
displayed on the control’s CRT. You can select:
3, 15, 30, or 60 seconds
or
2, 3, 5, or 10 minutes
or
UNLIMT (no time-out)