Omron V640 User Manual page 109

When SECS is Not Used
Communications with the host device follow the OMRON proprietary protocol.
The Amplifier Units are connected directly to the host device without using a CIDRW Controller.
Host
RS-232C
OMRON original protocol
This is e.g. a host,
or equipment con-
troller.
With the above system configuration, the Amplifier Unit connected directly to the CIDRW Controller
converts signals from RS-232C to RS-485. If this Amplifier Unit is removed, communications will not be
possible with the other Amplifier Units. If the Amplifier Unit connected directly to the CIDRW Controller
must be removed while the system is operating, insert a Link Unit (V700-L11) between the CIDRW
Controller and the first Amplifier Unit. If an Amplifier Unit on the end of the network is removed, be sure
to turn ON the terminating resistance on the Amplifier Unit that will end up on the end of the network
while the Amplifier Unit is removed.
RS-232C
OMRON original protocol
Amplifier Unit
V640-HAM12
RS-485
Max. 50 m
These are units that
control a CIDRW Head.
Up to 31 units can be
connected.
Link unit
V700-L11
Max. 50 m
SECTION 6
CIDRW Head
V640-HS62
These are antennae for
reading the carrier IDs
from the ID Tags and
writing the carrier IDs.
Just the relevant Amplifier Unit can be
removed and replaced while the power
remains on.
RS-485
Up to 31 units can be connected.
CIDRW System
Appendix
105
User's Manual