
[SM-P00121-A]
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13
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3
OPERATION
3. OPERATION
3.1 Switch settings
CAUTION:
Discharge static electricity that has built up on your body before touching
the slave unit. Otherwise, static electricity can cause damage to the slave
unit.
The slave unit will not identify the setting if the power is supplied. Make
sure the power of communication is turned OFF upon setting as they are
read into the unit only at power-up.
The cover on the slave unit is an easy-to-open one that requires only one
finger to flip it open. Keep the cover closed at all times except when
setting the switches. Otherwise, foreign matter may enter into the internal
circuit and cause unexpected failure, or the cover itself may get damaged.
Be extremely careful not to allow any foreign matter to enter the slave unit
when setting the switches.
Be sure not to touch the internal circuit board when setting the switches
as they are precisely built and can be damaged if mishandled.
1) Node address setting (hardware setting mode: enable when DR switch is set 0, 1, 2, or 4)
Note: With the software setting mode (DR switch is set 5), the value of node address switch is
disabled.
Name of switch
NA [node address]
×10: Sets tens place digit of the address
×1: Sets ones place digit of the address
Setting range
0 to 63 (in decimal)
Node address is read into memory at power-up.
Duplicate node address cannot be assigned.
2) Output mode setting (hardware setting mode: enable when DR switch is set 0, 1, 2, or 4)
Set output data at a communication error.
Note: With the software setting mode (DR switch is set 5), the value of output mode setting switch
is disabled.
Name of switch
Purpose
HC
(
Output mode setting
)
Ssts the output status at a communication error (such as bus
line error or timeout).
OFF:
Clear mode
ON(being slid in the direction of the arrow):
Hold mode
3) Baud rate setting
Set baud rate. With the DR switch setting to 5, software setting mode is toggleable.
Name of switch
DR switch setting
Baud rate
DR
(
Setting baud rate
)
0
125kbps
1
250kbps
2
500kbps
3
unable
4
Auto setting
5
Software setting mode
6 to 9
unable
Note: With the DR
switch setting to 5(software setting mode), both output mode setting HC (SW1) and
node address setting NA (SW3, SW4) are disabled.
[Example] Baud rate: 250kbps
[Example] Node address: 35