Table of Contents
Advertisement
4.
SETTINGS AND PROCEDURES BEFORE OPERATION
MELSEC-A
4.3.2
Setting
of
transmission specifications
Write during RUN
enabled/disabled
Enabled
Disabled
I
-
Remarks
I
I
I
I
Position
of
Setting Switch
I
ON
OFF
Setting
Items
Of
Switches
-
I
(1)
Write during RUN
Switches
I
I
-
S W l 1
Set whether a processing requested by the external device is executed
or not executed by the PC CPU in the RUN state when the computer link
operates with the dedicated protocol.
-
SW03
SW1O
Section 3.3.1 gives the functions Available with this setting.
Unused
Stop bit setting
(2)
Transmission specifications
Evenlodd parity
setting
Do not set the "unusable" baud rate setting (SW13, 14, and 15 ON).
2
bits
-
If these switches are set, the RUN indicator LED (LED No.
0)
is turned
OFF and operation is not possible.
Even
Not set
(3)
Sum check
1 bit
Set
SW12
Set whether the sum check code is added or not added to the end of the
message, when the computer link operates with the dedicated protocol.
Odd
-
Sum
check setting
Sections 8.4.1 to 8.4.4 and 8.4.5
(7)
give the message structure and sum
check code when the sum check setting is "Enabled".
Valid when
parity bit is
set.
Advertisement
Table of Contents
