5.8  PASS-THROUGH 
 
 
An alternative Pass-Through  layout  allows  the more efficient ID-NET  network  to be used. 
This  layout  is  really  an  ID-NET  Master/Slave  Multidata  layout  which  also  allows  each 
scanner  (Master  and  Slaves)  to  accept  input  on  the  Auxiliary  interface,  for  example  to 
connect a device such as a hand-held reader for manual code reading capability. 
 
Each  scanner  transmits  its  own  messages  plus  any  messages  received  by  its  Auxiliary 
interface onto the ID-NET interface. The Master passes all messages to the Host. 
 
When  On-Line  Operating  mode  is  used,  the  scanner  is  activated  by  an  External  Trigger 
(photoelectric sensor) when the object enters its reading zone. 
 
 
 
 
 
Figure 68 – Pass-Through On ID-NET Layout 
 
NOTE:  The  Master  scanner  connected  to  the  Host  can  be  alternatively 
connected  to  a  Fieldbus  network  using  a  Host  Interface  module  through  a 
CBX500 connection box. 
NOTE:  Other  backward-compatible  layouts  are  available  such  as:  RS232 
Master/Slave,  RS232  Pass  Through  and  Multiplexer.  We  recommend  using 
the more efficient ID-NET network for Master/Slave or Multiplexer layouts.