Rockwell Automation 20-COMM-R Remote I/O Adapter - Manual (Page 18)

2-2 Installing the Adapter
20-COMM-R Remote I/O Adapter User Manual
Publication 20COMM-UM004D-EN-P
Commissioning the Adapter To commission the adapter, set the Rack Address Rotary Switches and the
Configuration DIP Switches. Either set these switches to the desired
settings or disable them by sliding Configuration DIP Switches SW7 and
SW8 to the ‘On’ position so that adapter parameters can be used instead.
Important: New switch settings are recognized only when power is applied
to the adapter or it is reset. After you change a switch setting,
cycle power or reset the adapter.
Setting the Rack Address Rotary Switches
The adapter accepts a rack address between 00 and 77 octal. The default
setting is 01. See
Table 3.A on page 3-3 to determine the decimal equivalent
of the octal address to be used. Set the Rack Address Rotary Switches
(
Figure 2.1 ) to the octal address. The address is entered and displayed as an
octal value, but is internally converted to a decimal address. Each Remote I/
O device must have a unique rack address that the controller can recognize.
Note the following points:
• Although the adapter supports rack addresses up to 77 octal, not all
controllers recognize all of the addresses, and a Remote I/O channel can
support only 32 devices.
• If Configuration DIP Switches SW7 and SW8 are both set to ‘On’, the
adapter uses the decimal rack address set in Parameter 3 - [RIO Addr
Cfg]. See
Setting the Rack Address on page 3-3 .
• PLC-2 controllers identify rack addresses differently than other
controllers. PLC-2 controllers identify the adapter rack address as one
plus the value of the switch settings.
Figure 2.1 Setting the Rack Address Rotary Switches (Octal)
!
ATTENTION: Risk of equipment damage exists. The adapter
contains electrostatic discharge (ESD) sensitive parts that can be
damaged if you do not follow ESD control procedures. Static
control precautions are required when handling the adapter. If you
are unfamiliar with static control procedures, see Guarding
Against Electrostatic Damage, publication 8000-4.5.2.
!
ATTENTION: Risk of equipment damage exists. Pen ink or
pencil lead may damage the adapter switches. Do not use a pen or
pencil to set the switches.
2
1
0
9
8
3
4
5
6
7
2
1
0
9
8
3
4
5
6
7