8-3
Section
Mail Example
161
2. Turn ON the Mail Send Switch in the CIO Area words allocated to the CPU
Bus Unit.
n = CIO 1500 + 25 x unit number)
Mail Send Switch
For Unit #5, for example, the Mail Send Switch address is CIO 162503.
The status, such as mail being processed, and so on, is reflected in the User Mail
Status Area in the DM Area words allocated to the CPU Bus Unit. Check the sta-
tus as required.
User Mail Status: (100 x unit number) + 17, bits 0 to 2
Bits
Status
2
1
0
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
