User Manual PLC-3 FAMILY I/0 Instruction Manual

Configuring the Scanner through LIST
Chapter 2
2-21
I.T. Defaults / Configuration
The I.T. defaults selection in LIST configures channel 0 for Binary
Command Language (BCL) protocol communication with an industrial
terminal (see appendix A). You can use the industrial terminal as a
programming terminal for such functions as ladder programming. When
you select I.T. defaults, the default values are used as shown in the
following table.
The remaining configuration selections allow you to modify the front
panel parameters shown in the following table to something other than
their default settings.
Characteristic Description Default
privileges This selection allows you to select operating parameters for channel 0. Refer to the section
entitled Privileges" under DH or DH+ Configuration" on page 217 for a full description of
the privileges and how to assign them.
0, 2, 3, 4, 5, 6, 8,
10, 64, 65, 66, 68,
69, 70, 71, 72
communication rate The rate at which the RS232C device communicates to the processor through channel 0 is
the communication rate. You can select one of the following communication rates:
•110 bps
•150 bps
•300 bps
•600 bps
•1200 bps
•1800 bps
•2400 bps
•4800 bps
•9600 bps
•19200 bps
Set the communication rate by typing the number corresponding to the desired rate. An
asterisk displays next to the current communication rate.
9600 bps
parity You can configure channel 0 to communicate using the following parity selections:
•even
the channel transmits an even parity bit with each character and checks for an even
parity bit in each character received
•odd
the channel transmits an odd parity bit with each character and checks for an odd
parity bit in each character received
•none
the channel does not transmit a parity bit and does not check for parity bits
An asterisk (*) displays next to the current parity state.
even
stop bits You can specify the number of stop bits that channel 0 uses to communicate. The stop bit
selections are 1, 1.5, and 2. An asterisk displays next to the current stop bit selection. To
change the number of stop bits, type the number corresponding to the desired selection.
1
channel timeout You can specify the amount of time that the processor allows between operations on a
channel before terminating communication. This amount can be set up to a maximum of
32,767ms (32.767s). If you want to disable the timeout function, set the value to 0.
10,000 ms