Kikusui PAV10-20, Руководство пользователя

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PAV LAN
15
RS485 Multi-Drop Connection
Description
Up to 30 PAVs without LAN can be connected to a PAV with LAN. An IP address is assigned
to the PAV with LAN, and the other PAVs without LAN can connect to the LAN through the
PAV with LAN. This scheme is called multi-drop connection. (See the following figure.)
In a multi-drop connection, global commands can be applied to all PAVs connected through
RS485 link cables.
In a multi-drop connection, only a single controller (e.g., PC) can connect to the PAV with
LAN at any given time. Make sure it is a one-to-one connection.
IN
OUT
IN
OUT
RS485
link cable
RS485
link cable
IN OUT
1st PAV 2nd PAV 31st PAV
- J4 -
- J4 -
- J4 -
IN OUT IN OUT
RS485
link cable
RS485
link cable
IN OUT
1st PAV 2nd PAV 31st PAV
- J4 - - J4 -
- J4 -
LAN
PAV with LAN
(master unit)
Using different
IP addresses
Using different
RS485 addresses
The same RS485
address can be used.
Slave unit Slave unit
Up to 30 units
can be connected.
PAV with LAN
(master unit)
Slave unit Slave unit
LAN
PC
Category 5
Cable