CTD-N Technical Manual
P/N 95F-6000-00 (February 2017)
page 127
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
CAOP, RAOP, SAOP, #N
Set, clear, or read address operation
Usage
CAOP
RAOP
SAOP
#Nxy
Mode
OPEN, RUN
ADR/CAOP/RAOP/SAOP commands only work in OPEN mode.
The #n/#N command can be entered in RUN or OPEN mode.
Continuous Output Mode (SCOP) cannot be used while in address operation mode.
Address Operation mode works ONLY with output format 0 (SFRM=0).
•
When you try to enable the address operation mode using the SAOP command, if the
SFRM command is set to a different format “ERROR! INCORRECT FORMAT FOR
ADDRESS MODE” will display.
•
If you try to change the SFRM setting after the Address Operation is enabled, you’ll get
the error “ERROR, ADDRESSING ACTIVE”.
Description
These commands set, clear, or read address operation. The intent of address operation is to enable
the use of multiple instruments on the same serial connection. The address for each instrument
must be unique and configured via the ADR command prior to connecting multiple instruments.
Address operation will then enable a user to interact with a given instrument by sending the correct
#Nxy string (where xy is the address number 0 to 99), executing commands, and then de-address-
ing the unit by sending a # character.
CAUTION. The #N
xy
command is case sensitive and will behave slightly different depending on the
mode.
While in Run Mode:
•
No carriage return is needed after the # to “lock” or “de-address” the unit.
•
After entering #Nxy or #nxy, the unit will immediately output a sample line. If you en-
tered an uppercase “N”, the setting “sticks” and you can send additional commands or
simply send another carriage return to get another sample.
•
If you entered a lower-case “n”, the unit resumes ignoring commands. Entering #Nxy
will make the unit respond to commands again.
•
Addressing different instruments with the #Nxy command will automatically “de-ad-
dress” all other connected instruments.
While in Open mode:
•
Commands are not processed until a carriage return is sent. For example, the unit will
not output the results of the ROP command if you enter #Nxy ROP. Therefore, you’ll
need to enter a carriage return after the #Nxy command which makes the setting “take
hold” and then send the ROP command next.
•
The lowercase #nxy command doesn’t function in Open mode.
