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7.5 KV Mode Programming
KV-300 Series Only
KV-300
KV-10/80
Chapter 7 KV-L2 Serial Interface Module
1-253
1
7
7.5 KV Mode Programming
7.5.1 Operating in KV Mode
Communications protocol
In KV mode, the KV-L2 operates in the same manner as a KV-300 CPU performing
communications. Set the communications protocol to KV mode and connect the KV-
L2 to external units as described below.
Setting the operation mode
Set the operation mode using the operation mode setting switch SET A (A1 to A4).
Use A1 and A2 to set the mode for port 1, and A3 and A4 to set the mode for port 2.
Turn off the power switch before setting the operation mode.
Communications protocol
This table shows the communications protocol for KV mode. Refer to this table when
setting the communications parameters of the external unit to be connected.
When setting the external unit to be connected, refer to the instruction manual
supplied with the unit.
When the module is set to KV mode, the communications protocol specified by the
communications protocol setting switch SET B is invalid.
Connecting to the KV-L2
When using port 1
When connecting the KV-L2 to an external unit with an RS-232C port, connect the
RS-232C cable as shown in the following figures. Alternatively, use either a stan-
dard or null modem RS-232C connection cable (optional) to port 1 (RS-232C).
ON
OFF
A1 A2 A3 A4
Operation mode 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
Duplex Full
Synchronization Start/stop
Data format ASCII
Baud rate 9600 bits/s
Data length 8 bits
Parity check Even
Stop bit length 1 bit
D-Sub 25-pin
connector
1
23
4 5 6 7 8 9 10 11 12 13
14
15 16
17 18 19 20 21 22 23 24 25
2
3
4
5
7
SD
RD
RS
CS
SG
KV-L2
2
3
4
5
6
20
7
SD
RD
RS
CS
DR
ER
SG
2
3
4
5
7
SD
RD
RS
CS
SG
KV-L2
2
3
4
5
6
20
7
SD
RD
RS
CS
DR
ER
SG
External unit
designated as DTE
External unit
designated as DCE
KVHKA Chap 07_5to10.p65 08.3.11, 11:18 AM253
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