Sending Commands; Querying Status; Reading The Status Register; Setting The Interface Command Set - JDS Uniphase SB Series User Manual

equipped with a serial port. COM port 2 of the computer is designated as the serial port and is
connected to the switch.
Before using any of these examples, ensure that the active interface command set is SB.
The RS232 interface cannot receive an SRQ interrupt.
The RS232C commands that appear in this section do not always show the terminating
character <CR>; however, it is implied.

Sending Commands

OPEN "COM2:1200,N,8,1" FOR RANDOM AS #3
A = 10
PRINT#3, "CLOSE ";A
PRINT#3, "XDRS 255"
END

Querying Status

This example queries and displays the current channel setting.
PRINT#3, "CLOSE?"
INPUT#3, A
PRINT A
END

Reading the Status Register

The serial polling function is not supported on any RS232 interface, but STB? can be used to
query the status register since the query command performs the same function as serial
polling.
This example changes the channel setting and reads the status register continuously until the
output has settled.
OPEN "COM2:1200,N,8,1" FOR RANDOM AS #3
PRINT#3, "CSB"
PRINT#3, "CLOSE 5"
DO
PRINT#3, "STB?"
INPUT#3, SR1
LOOP UNTIL (SR1 AND 4)
PRINT SR1
END

Setting the Interface Command Set

The SB switch can be set to emulate the interface command sets of earlier models of JDS
Uniphase SC Series and SX Series switches.
' clear status register
' loop until motor settles
Programming Guide – 33