Specifications

7 - 7
(1) List of devices to be used
Device name Description Device name Description
SM400 Normally ON X20 to X2F Data to be sent to the PLC CPU B
M0
Turns ON for only 1 scan after the open
processing for the connection No.1 is
completed.
X0B9
(X(n+1)9)
Turns ON when the initial processing of the
Ethernet module is completed normally.
M1
Turns ON for only 1 scan when the open
processing for the connection No.1 is
completed abnormally.
X0BC
(X(n+1)C)
Turns ON when COM.ERR LED turns on.
M10
Turns ON for only 1 scan after the close
processing for the connection No.1 is
completed.
Y40 to Y4F
Stores the information of X20 to X2F sent
from the PLC CPU B.
M11
Turns ON for only 1 scan when the close
processing for the connection No.1 is
completed abnormally.
Y70 to Y77
Stores the information of X0 to X7 sent from
the PLC CPU B.
M20
Turns ON for only 1 scan after the data
sending is completed.
Y78
Turns ON when the data receiving is
completed normally.
M21
Turns ON for only 1 scan when the data
sending is completed abnormally.
Y79
Turns ON when the data receiving is
completed abnormally.
M22
Turns on at the data sending. Turns OFF at
the completion of the data sending.
Y7A
Turns ON when the data sending is
completed normally.
M30
Turns ON for only 1 scan after the data
receiving is completed.
Y7B
Turns ON when the data sending is
completed abnormally.
M31
Turns ON for only 1 scan when the data
receiving is completed abnormally.
Y0B7
(Y(n+1)7)
COM. ERR LED off request
M48
Turns ON when the connection No. 1 is in the
open status.
D0 to D9
Stores the control data of the OPEN
instruction.
M49
Turns ON when the connection No.2 is in the
open status.
D10 to D11
Stores the control data of the CLOSE
instruction.
M64
Turns ON when the open request for the
connection No. 1 is being performed or while
the connection No. 1 is opened.
D20 to D21
Stores the control data of the BUFSND
instruction.
M65
Turns ON when the open request for the
connection No. 2 is being performed or while
the connection No. 2 is opened.
D22 Stores the send data length.
M80
Turns ON while the connection No.1 of the
Ethernet module is receiving data.
D23 Stores the send data (X0 to X7).
X0 to X7 Data to be sent to the PLC CPU B D24 Stores the send data (X20 to X2F).
X8 Switch to command sending data D30 to D31
Stores the control data of the BUFRCV
instruction.
X9
Switch to command clearing the error display
on the display LED
D32 Stores the receive data length.
X0A Switch to command opening the connection D33 Stores the receive data (X0 to X7).
X0B Switch to command closing the connection D34 Stores the receive data (X20 to X2F)