Mircom TX3 Series Installation Manual page 13

Figure 3 shows a configuration with TX3 devices connected on both an Ethernet
TCP/IP network and on RS-485 subnetworks. Devices connected to a Master
Node's RS-485 subnetwork are Slave Nodes to the Master Node. Each RS-485
subnetwork can have up to 63 devices connected to it; you can still have more
than 63 Master Nodes connected to the Ethernet network.
Lobby Control Unit
(Master Node)
Ethernet Network
Lobby Control Unit
(Master Node)
Figure 3.
If you connect to the Ethernet TCP/IP network with the TX3 Configurator, you
can configure any of the nodes in this configuration. If you connect directly to a
device using USB, a modem, or a COM port, you will only be able to configure
devices that are on the same RS-485 subnetwork as that device.
Note:
TX3 Touch Screen Installation Manual
Touch Screen
(Slave Node)
1 2 3
ABC DEF
4 5 6
GHI JKL MNO
7 8 9
PQRS TUV WXYZ
0 #
*
RS-485 Subnetwork
Elevator Restriction Unit
(Slave Node)
1 2 3
ABC DEF
4 5 6
GHI JKL MNO
7 8
9
PQRS TUV WXYZ
* 0 #
RS-485 Subnetwork
TX3 devices connected to a combination Ethernet TCP/
IP network with RS-485 subnetworks
Normally, there can only be one Master Node on an RS-485
subnetwork. That is, you cannot connect one RS-485 subnetwork
to another RS-485 subnetwork. However, if you want to connect to
a Touch Screen panel remotely over the Internet (for instance, to
configure Touch Screen options such as color and themes), the
Touch Screen panel must be set as an Master Node even if there is
no slave panel connected to it.
Card Access Controller
(Slave Node)
Card Reader A
Card Reader B
Card Access Controller
(Slave Node)
Card Reader A
Card Reader B
Introduction
13