Con nected De vice Char ac ter Se quence
Com puter con nected di rectly "+++at\r\rS\n"
Mo dem offline from phone net work
Se quence will be seen if re mote con nec tion
es tab lished
mo dem sta tus data fol lowed by "S\n"
Mo dem con nected through to re mote com -
puter
"+++S\n"
GPIB/RS232 Mo dem
Com mands
The fol low ing ta ble lists the GPIB/RS232 Mo dem Com mands and the spe cial
se rial in ter face only com mands:
Com mand Pa ram e ter Def i ni tion
!BYE RS232-type com mand only, al lows the re mote PC to
in struct the power me ter to tell its lo cal mo dem to
hang-up. This en sures that when com mu ni ca tion is
com pleted, the mo dems at both ends of the line can
be dis con nected and the tele phone line re leased.
!DCL RS232 type com mand only. Clears all buf fered
GPIB/RS232 mes sages wait ing to be pro cessed.
Clears all buf fered GPIB/RS232 data wait ing to be
out put. Stops any pend ing ac tions.
!SPL RS232 type com mand only. Al lows a GPIB type se -
rial poll to be re quested in re sponse to an SRQ from
the power me ter. This will re turn the in stru ment sta -
tus reg is ter and clear the SRQ bit within that reg is ter.
The *CLS com mand should be used to clear the rest
of the reg is ter.
MODDEL <value> Mo dem re dial de lay time, 1 to 10 min utes (de fault = 5
min.)
MODINIT Ini tial ize con nected mo dem
MODLIM <TRUE|FALSE> Autodial en able for lim its fail ure
MODPH <string> Phone num ber - up to 40 char ac ters
MODPWR <TRUE|FALSE> Autodial en able for power on
MODRED <value> Mo dem re dial count, 0 to 10 (de fault = 5)
MODRNG <TRUE|FALSE> Autodial en able for range fail ure
The RS232-type com mands (!BYE, !SPL and !DCL) do NOT re quire ter mi nat -
ing. All other com mands or com mand strings re quire a new line char ac ter to
ter mi nate.
Re fer to Sec tion 4-7 , Sys tem Menu, for in for ma tion on us ing the front panel
menus to con fig ure mo dem op er a tion. Re fer to Sec tion 6-10 , ML24XX Na tive
GPIB Com mands, for in for ma tion on us ing GPIB com mands to con fig ure mo -
dem op er a tion.
ML2400A OM 5-7
PROCEDURES RS232 MODEM SUPPORT
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