Specifications

7 - 15
(1) List of devices to be used
Device name Description Device name Description
SM400 Normally ON Y40 to Y4F
Stores the information of X20 to X2F sent
from the PLC CPU A.
M20
Turns ON for only 1 scan after the data
sending is completed.
Y70 to Y77
Stores the information of X0 to X7 sent from
the PLC CPU A.
M21
Turns ON for only 1 scan when the data
sending is completed abnormally.
Y78
Turns ON when the data receiving is
completed normally.
M22
Turns ON at the data sending. Turns OFF at
the completion of data sending.
Y79
Turns ON when the data receiving is
completed abnormally.
M30
Turns ON for only 1 scan after the data
receiving is completed.
Y7A
Turns ON when the data sending is
completed normally.
M31
Turns ON for only 1 scan when the data
receiving is completed abnormally.
Y7B
Turns ON when the data sending is
completed abnormally.
M48
Turns ON when the connection No. 1 is in the
open status.
Y0B7 COM. ERR LED off request
M80
Turns ON while the connection No.1 of the
Ethernet module is receiving data.
D20 to D21
Stores the control data of the BUFSND
instruction.
X0 to X7 Data to be sent to the PLC CPU A D22 Stores the send data length.
X8 Switch to command sending data D23 Stores the send data (X0 to X7).
X9
Switch to command clearing the error display
on the display LED
D24 Stores the send data (X20 to X2F).
X20 to X2F Data to be sent to the PLC CPU A D30 to D31
Stores the control data of the BUFRCV
instruction.
X0B0
(X(n+1)0)
Turns ON when the connection NO.1 is
completely open.
D32 Stores the receive data length.
X0B9
(X(n+1)9)
Turns ON when the initial processing of the
Ethernet module is completed normally.
D33 Stores the receive data (X0 to X7).
X0BC
(X(n+1)C)
Turns ON when COM.ERR LED is on. D34 Stores the receive data (X20 to X2F)