8-1
Section
Overview of Mail Function
159
If a transmission is restarted while the mail processing is still in progress, it will be
invalid. After the transmission has been completed, the Ethernet Unit will auto-
matically turn the switch OFF again. Once the switch has been turned OFF,
another mail message can be sent.
Unit Control Switches: CIO 1500 + (25 x unit number)
Mail Send Switch
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
If there is a need for immediate notification when an error occurs, e-mail can be
sent at the same time as an error is recorded in the error log. When an error to be
recorded in the error log occurs, the e-mail transmission is started according to
the mail settings that have previously been made in the CPU Bus Unit System
Setup.
Note If several errors in a row are recorded in the error log, the notification of these
errors may all be included in the same e-mail message.
If there is a need to periodically check the Ethernet Unit’s status, e-mail can be
sent at regular intervals. With this method, e-mail is sent at fixed time intervals
according to the mail interval and mail information settings in the CPU Bus Unit
System Setup.
Note After the mail processing has been completed, the next e-mail will be sent when
the fixed time interval elapses. There may be discrepancies in the transmission
intervals if the Ethernet Unit status causes the processing to take more time.
8-1-4 Mail Status
The mail status is reflected in the Mail Status areas in the CPU Bus Unit words
allocated in the DM Area. It can be checked as required.
Mail Status: (100 x unit number)
User Mail Status
Periodic Mail Status
Error Mail Status
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Bits
Status
2
1
0
6
5
4
10
9
8
0
0
0
Waiting for mail, or mail ready to send according to Mail Send
Switch, or no mail is being sent.
0
0
1
Mail being processed.
0
1
0
Waiting for mail, or mail ready to send according to Mail Send
Switch. Previous mail transmission completion was normal.
1
1
0
Waiting for mail, or mail ready to send according to Mail Send
Switch. Previous mail transmission completion was abnormal.
1
1
1
Mail cannot be sent (due to System Setup error).
Note 0: OFF; 1: ON
Triggered by Error Log
Recording
Triggered at Regular
Intervals
