Rockwell Automation 2706-DXX Dataliner Message Display DL5 Series - Manual (Page 68)

2706-UM001A-US-P
8-4 Special Functions
SET PORT Special Function The set port function allows you to set the following parallel and serial port
parameters.
•
positive or negative logic (high true or low true) of the parallel port
•
baud rate (300, 1200, or 9600) of the RS-232 serial port
•
address of the DL5 (for serial triggering)
You enter the set port function by pressing the [Y] and [Retrn] keys in
response to the SET PORT? prompt. After selecting the set port function,
the first prompt that the DL5 displays:
If you answer [Y] (the default) to the high true input option, the DL5 will
interpret the voltages on the data lines as positive logic signals. If you
answer [N] to the high true option, negative logic is selected.
If positive logic is selected:
•
A voltage on a data line is interpreted as an ON (logic 1 / true) condition.
•
The absence of voltage on a data line is interpreted as an OFF (logic 0 /
false) condition.
If negative logic is selected:
•
A voltage on a data line is interpreted as an OFF (logic 0 / false)
condition.
•
The absence of voltage on a data line is interpreted as an ON (logic 1 /
true) condition.
Note: If possible, we recommend that you configure your system so that in
a normal operating condition as few as possible input lines have a voltage
applied to them. This will keep the DL5 at a lower operating temperature
and extend its life.
The next prompt that you must respond to is:
The present baud rate is the default value. Enter the desired baud rate: 3 for
300, 12 for 1200, and 96 for 9600. The baud rate changes immediately.
The DL5 is shipped with a baud rate of 9600 baud.
Once the baud rate is changed, the baud rate of your programming device
must also be changed to match the DL5 before programming/editing of the
DL5 can continue. After specifying a baud rate, the current address is
displayed:
HIGH TRUE?Y
Baud (3, 12, 96):96
ADDRESS: xxx