Juniper Systems JS600 - Manual (Page 50)

Page 5-8 Sending and Receiving Information
Checksum
A checksum is the sum of ASCII codes for all the characters in a line of data, excluding the
checksum itself. It provides a transmission error check if your computer is programmed to
calculate its own sum on the incoming characters. If the sum on your computer does not
match the sum sent by the FieldBook, an error has occurred. Your computer will request
retransmission of the line by sending the repeat request to the FieldBook. If you want a
checksum, set this parameter to Y (yes). The default setting is N (no).
▲ ▲ ▲ ▲ ▲ Coordinating the Devices
Transmitting to a Printer
Transmitting data to a printer is usually simple. Set the end-of-line sequence to a carriage
return, line feed; or just a carriage return if your printer automatically supplies a line feed
whenever it receives a carriage return. Turn the printer on and make sure the paper is
properly installed.
Transmitting to a Computer
Via PolyTools
If you are using PolyTools to communicate with the FieldBook, execute PolyTools on the
computer and get into the Transfers Files, Upload From FieldBook option. See Section 7,
PolyTools Application Development Program, Transfer Files, for details.
Via Windows Terminal Program
If you are using the Windows Terminal program to communicate with the FieldBook,
execute the program and get into the Transfers, Receive Text File option. Type in the name of
the file you are transferring from the FieldBook and press OK.
Via a Communication Package
If you are using a communication program, refer to the instructions included with the
program.
To a Computer With Standard Software Handshaking
Most computers use standard communication protocol to control the flow of data. The
FieldBook supports a subset of the XON/XOFF communication protocols.
A computer using the XON/XOFF protocol issues XON to indicate that it is ready to accept
data and XOFF to stop data transmission. XON and XOFF are ASCII characters DC1 (ASCII
decimal 17) and DC3 (ASCII decimal 19), respectively. If your computer uses this protocol,
set the FieldBook's continuous request character to DC1 and stop request character to DC3.
When the computer issues XON, the FieldBook begins to transmit data continuously.
To a Computer Without a Program to Provide Communication or Standard Software Handshaking
If your computer does not have a program to provide communication through the serial
port, you have to write one.