HP 9114B Operator's Manual page 33

HPAL Commands Catagrized As To When They
Make the HE 9113Ca Fon |e Sleep State
To The Adtive State
W Listener if Listener or Talker or If
aways or Talker Address Equals Device's Address [Never
Nop Data LAD (0:31) oY
Lo End TAD (0.311 RFC
cL GT
PU SoC
EAR PPD
irc GET
REN EW
NRE PPEO (07)
AAU FREI (0.7)
LP OL (031)
540 (030) DDT (0.31)
AD (031) ETO
ap 0.31) ETE
AEs 0:31) NAD
ane son
ssT
soi
SAI
Ter
HP 110 and HP Portable Plus
The HP 100 Series Portables can be reconfigured quickly
Therefore, every time the Portable begins talking to any deviee on
theloop. the Partables send oul an autoaddressing command
This always happensif it has beenover five seconds since the
Portable Tast accessed a device onthe loop. Auto addressing
always wakes up any HP 911413 on the loop
HP 71B
The HP 71B can becontrolled 0 a greal extent as to when it will
send out auto address commands. 1 will assign addresses
automatically only when it is turned on, and this canbe disabled
bysetting aninternal flag. Theother area of concern withtheHP
71B is howit determines which device is anthe loop. If absolute
loopaddresses or assign codes are not usedto speaty thedevice
on the loop, the HP 718 may have to search the loop sequentially
for theproper deviceto use. This wouldrequire each device on the
loopthat has a lower address than the device that the HP 71B is
searching for tosendits device ID. This requires the HP 91148
§0to the active made. For more information on HPL operation of
the HP 718,please refer to the HP-IL Interface Owner's Manualfor
theHP? 71. The key is to use assign codes or absolute laop
addressing
+7