Setting Parameters; Baud Rate Switch And Rs232 Serial Port; Status Switch Setting - Data I/O 298 Manual

2.5.2 SElTING PARAMETERS
Before the 298 can operate with another system, three
parameters must be set: parity, stop bits and the baud
rate. These parameters must be the same for both
systems.
Baud Rate
To set the baud rate, refer to figure 2-7 and follow this
procedure:
1. Locate the baud rate rotary switch on the programmer's
rear panel.
2. Locate the desired baud rate on the chart in figure 2-7
and the switch position required for that baud rate.
3. With a flat-blade screwdriver, turn the switch to the
numbered switch position that corresponds to your
desired baud rate.
SWITCH
BAUD RATE POSITION
50 0
75 1
110 2
134.5
3
BAUD RATE SWITCH
150 4
300 5
600 6
1200 7
1800 8
2000 9
2400 10 or A
3600 11 or B
4800
12 or C
7200
13 or D
9600 14 or E
19,200 15 or F
Figure 2-7. Baud Rate Switch and RS232 Serial Port
Parity and Stop Bits
To set parity and stop bits, refer to figure 2-8 and follow
this procedure:
CAUTION
Make sure that all device(s) have
been removed from the Pak socket(s)
before removing the Pak or turning
off the programmer. Voltage
transients caused by removing the
Pak could damage the device(s).
1. Turn off programmer.
2. Remove the Pak from the programmer (see
subsection 2.3).
3. Access the controller board's status switch (U53)
through the cut-out in the lower right corner of the
protective shield. See figure 2-8.
4. Flip the switches to the desired setting; figure 2-8
shows the switch positions set by the factory.
5. Reinstall the Programming pak and turn on the
programmer.
J
JD
JD
JO
JO
~
TOP VIEW
c=J
PARITY (OFF-ODD, ON-EVEN)
o===r---i
PARITY (OFF, ON) ·
o=:=t==-i
STOP BITS (OFF-2, ON-1)
c=J-==i
NOT USED
Figure 2-8. Status Switch Setting
2-8
10-990-0013