[SM-P00049-A]
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20
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PRODUCT
１
2) Indicators and switches on Slave station
(1) Various LED lamps are installed in front of station to aid visual varification of operational
conditions. Each function is printed on the sheet made of resin. The content of each func-
tion is posted in the table below. Make use of them during maintenance works or for varifi-
cation of operation.
Setting switch
Name of
LED
Content of indication
PW1
Lit when unit power is ON.
PW2
Lit when valve power is ON.
SD
Blinks while Data being output.
RD
Blinks while Data being input.
L RUN
Used for checking the normality of data transfer between the slave and master stations: lit when data is
received normally from the master station and goes off when data is absent for a preset period of time.
(Lit again when data is received normally.)
L ERR
Lit when a transmission error (CRC error) is detected.
Goes off after a preset period of time. (The RUN indicator goes off at the same time.)
Lit when the user specifies a value out of range when setting the station number or transfer rate.
(Lit again when the user corrects the setting and reboots the system.)
Blinks when the station number or transfer rate setting is modified during operation.
(The RUN indicator remains lit; the slave station operates with the station number and transfer rate set
upon startup.)
Name of Switches
Content of Setting
Station number setting switch
(SW1
・
SW2)
Sets the slave station numbers within the bounds of 1 to 64. SW1 takes care
of the second digit (10) while SW2 takes care of the first digit (l).
Transfer rate setting switch (SW3)
Sets the transfer rate between the master and slave stations.
A value ranging from 0 to 4 is set.
Switch used for specifying the state of
output after error (SW4 : HLD / CLR)
Specify whether to hold (HDL) or clear (CLR) the output when an error oc-
curs.
End station setting switch (SW4 : END)
Turn ON this switch if this slave station is connected to the farthest end from
the master station.
※
Turn OFF this switch if the CC-Link special high-performance cable is
used and connect relevant resistor. (For details, see section 3.1.)
Setting switch
バルブ
ユニット
SW1
SW2
SW3
SW4
