Host Link Unit Components - Omron SYSMAC CV Series Operation Manual

Host Link Unit Settings and Parameters

2-2-2 Host Link Unit Components

Unit
No.
1 0
X10 X10
1 0
X10 X10
PORT1
RS-232C
PORT2
RS-232C
RS-422
RS-232C
RS-422
14
The following illustration shows the components of the Host Link Unit.
Indicators
It is possible to monitor the working condition of the Host Link Unit with these
indicators.
Unit number switch
The unit number is set with this decimal rotary switch.
Node number switch
The node number at communications port 2 is set with this decimal rotary
switch.
Communications port 1 (RS-232C only, 25 pins)
Connects to an RS-232C cable.
Communications port 2 (RS-232C/RS-422 selectable, 9 pins)
Connects to an RS-232C or RS-422 cable.
Communications path selector
Top
Bottom
5-V output switch
Top
Bottom
DIP switch
Basic operations of the Unit are set here.
Terminator switch
Top
Bottom
Note Cables for the connectors (ports 1 and 2) are not available from OMRON.
Selects RS-232C for communications port 2.
Selects RS-422 for communications port 2.
5 V, which is used if the optical interface is connected to
communications port 1, is supplied to pin number 14 of
communications port 1.
5 V is not supplied to communications port 1.
Connects termination resistance for RS-422
communications.
Disconnects termination resistance.
Section 2-2