User`s manual

Western Reserve Controls, Inc. 1782-JDC User’s Manual
13
4.5 JDC Product Configuration
Table 4-5 JDC Parameter Instances
Parameter
Param.
Instance
Description Parameter Choices
Default
Setting
Default
Value
Number of
Data Bits
1 ASCII data frame size 7 or 8 8 8
Serial Baud
Rate
2
RS232/ RS485 communications
speed
0 = 9600, 1 = 300, 2 =
600, 3 = 1200, 4 =
2400, 5 = 4800, 6 =
19.2k, 7 = 38.4k
9600 0
End-of-Text
Character
3
Character which identifies the
end of the data string
Any valid standard
ASCII character (0 –
127)
Carriage
return
13 (dec.)
0x0D
Parity
4 Character frame parity operation
0 = None, 1 = odd, 2 =
even
None 0
Max Number
of Receive
Chars
5
Maximum number of characters
the JDC expects to receive into
its ASCII port from the serial
device
0 – 255 16 16
Max Number
of Transmit
Chars
6
Maximum number of characters
the JDC expects to transmit out
its serial port to the serial device
0 – 255 16 16
1. Number of Data Bits: The number of data bits in the character frame. Values of
7 and 8 are valid.
>> Note: The JDB always uses one Start Bit and one Stop Bit .
2. Baud Rate: The baud rate of the ASCII channels. Baud rates of 300, 600, 1200,
2400, 4800, 9600, 19.2k and 38.4k baud are valid.
3. End-of-Text Character: The (printable or non-printable) byte character (value of
0-255) which signifies that the last character in a string of ASCII characters has
been reached. The JDB will not transmit to the device or return to the Master any
additional characters after the EOT character, or any characters in the string after
the maximum character count is reached.
4. Parity: Designates the use of Odd, Even or No parity for the character frames.
5. Maximum Number of ASCII Input Characters: The maximum number of ASCII
characters expected to be input from the serial device connected to this port. The
end-of-string, or end-of-text, character is included in this count. (A “0” implies the
port does not receive data from the external device or that no device exists.)