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7.3 Installation
KV-300 Series Only
KV-300
KV-10/80
Chapter 7 KV-L2 Serial Interface Module
1-245
1
7
7.3 Installation
7.3.1 Setting the Operation Mode
Setting the operation mode
Turn off the power switch before setting the operation mode. Use the operation
mode setting switches A1 to A4 (SET A). A1 and A2 control the mode for port 1, and
A3 and A4 control the mode for port 2. (Ports 1 and 2 can be set independently.)
Setting port 2
Set port 2 to either RS-232C or RS-422A modes.
If port 2 is set to RS-232C mode and is connected to an external unit set to
RS-422A mode, the connected unit may be damaged.
When setting port 2 to RS-232C mode, set the TERMINATOR (terminal
resistor) to OFF.
Port 1 Port 2
A1 A2 A3 A4
KV mode OFF OFF OFF OFF
Display Interface mode OFF ON OFF ON
Non-procedure mode ON ON ON ON
Communication mode setting switch
(A1 to A4 are factory-set to OFF.)
Port 2 interface selection switch
422A 232C
INTERFACE
RS-422A: Set the switch to the left (422A)*1.
RS-232C: Set the switch to the right (232C).
*1 When setting port 2 to RS-422A, set the TERMINA-
TOR (terminal resistor) to ON. (Refer to Setting the
TERMINATOR on the next page.)
CAUTION
ON
OFF
A1 A2 A3 A4
KVHKA Chap 07_1to4.p65 08.3.11, 11:18 AM245
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