4-4
Section
DM Area Allocations
59
Mail Status (Ethernet Unit to CPU Unit)
User mail status
Periodic mail status
Error log mail status
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
m+17
The transmission statuses of user mail, periodic mail, and error log mail are
stored in this word as shown in the following table.
Bits
Status
2
1
0
6
5
4
10
9
8
OFF
OFF
OFF
Mail is either waiting to be sent or can be sent using
the Mail Send Switch. No mail is being sent.
OFF
OFF
ON
Mail is being sent.
OFF
ON
OFF
Mail is either waiting to be sent or can be sent using
the Mail Send Switch. The previous mail
transmission was completed normally.
ON
ON
OFF
Mail is either waiting to be sent or can be sent using
the Mail Send Switch. An error occurred in the
previous mail transmission.
ON
ON
ON
Mail cannot be sent (system setting error).
Socket Services Parameter Area 1 to 8 (Ethernet Unit to CPU Unit)
Offset
Socket
No. 1
Socket
No. 8
UDP/TCP socket number (1 to 8)
Local UDP/TCP port number (0000 to FFFF Hex)
Remote IP address (00000000 to FFFFFFFF Hex)
Number of send/receive bytes (0000 to 07C0 Hex (1984))
Send/receive data address
(Same as FINS variable area designation method.)
Timeout value (0000 to FFFF Hex)
Response code
Remote UDP/TCP port number (0000 to FFFF Hex)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
...
+0
+1
+2
+4
+5
+6
+8
+9
m+18
m+88
...
m+19
m+89
m+20
m+21
m+90
m+91
m+22
m+92
...
m+23
m+93
m+24
m+94
m+25
m+95
m+26
m+96
m+27
m+97
...
When socket services are requested by control switch manipulation, the set-
tings must be made in advance in a Socket Service Parameter Area. The param-
eters used will vary depending on the service requested. For details, refer to 6-2
Using Socket Services With Socket Service Request Switches.
IP Address Display Area
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
m+98
m+99
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
The set values of the Local IP Address Switches (rotary switches 1 to 8) on the
back of the Ethernet Unit are read and stored here when the power is turned ON.
If an incorrect address is set, 0000 (Hex) will be stored here and the ERC indica-
tor will flash. (Refer to 3-4-3 Setting the Local IP Address.)
