SECTION 10
SERIAL REMOTE INTERFACE
109
10.3 INSTALLATION
Installation of the Serial Interface is generally performed at the factory. This involves removing the
standard IEEE-488 interface PCB assembly and rear panel connector/cable and installing the serial
interface assembly and rear panel connector/cable.
INTERFACE PCB DIP Switch S1-5 must be set to ON to indicate that the Serial Interface has been
installed.
10.4 SETUP
After installing the Serial Interface into the UPC
– OR - after erasing all program memory – OR - after
system RESET, the serial communication parameters must be set (BAUD RATE, PARITY and EOS
Terminator) as follows:
1.
Press the
fn
key, select
GENERAL SETUP
then
UPC STATUS
.
2.
Press the
EDIT
key and enter the desired
BAUD RATE
numerically, selected from the list above.
Then press
ENTER
.
3.
Select the
PARITY
by pressing the
+/-
key until the desired selection (NONE, ODD or EVEN) is
shown. Then press
ENTER
.
4.
Select
EOS
(End Of String) Terminator by pressing the
+/-
key until the desired selection (CR/LF,
LF or CR) is shown. Then press
ENTER
.
5.
Press
STORE
.
NOTE:
Incorrect communication parameters may result in the UPC displaying a:
PARITY ERROR,
FRAMING ERROR, and/or
OVERRUN ERROR.
Sending a BREAK signal will result in a BREAK RCVD message and will terminate data transmission in
progress from the UPC.
10.5 OPERATION
Operation of the UPC via Remote Serial Interface consists of utilizing the same commands available for
the IEEE-488 interface (
NOTE:
Normally the UPC is in the LISTENER mode. When the UPC is Queried for information, the UPC
automatically enters the Talker mode until the response data or another command is sent from the Host.
10.5.1 COMMUNICATION MONITORING AID
The UPC STATUS Display (
fn
,
3
,
3
) displays "LISTENER" while data is being received from the HOST, or
"TALKER" if a Query response (Message Available) is available and has not yet been completely sent by
the UPC.
The UPC STATUS Display will display the LAST DATA BYTE received from the HOST. Carriage Returns
(0Dhex) are displayed as Line Feeds (0Ahex).
The UPC STATUS Display also will display "RTS" if the Request To Send signal from the HOST is true.
This signal must be true to allow the UPC to send data. To monitor CTS (Clear To Send) from the UPC,
use the Host or a probe at the Host end of the Serial Interface cable. The Host must not send commands
or data unless CTS is true.
This monitoring aid is not updated as fast as serial communications can occur, therefore sudden changes
on the Serial Interface may not be seen on the UPC display.
