User’s
Manual
61
Appendix
Note 1) The special module can be designated not only by the assigned register, but
also by the mounting position. The mounting position is designated by a
constant data for the operand A as follows.
(Unit
number)
×
256
+
(Slot number)
H
Slot
number
(hexadecimal)
Unit
number
(hexadecimal)
For example, if a special module is mounted on Slot-4, Unit-0 (basic unit)
and allocated to XW008 - YW011, the following two READ instructions
function the same.
[ XW008 READ RW010
→
D0100 ]
[ H0004 READ RW010
→
D0100 ]
Note 2) The READ instruction is not executed as error in the following cases. In
these cases, ERF (instruction error flag = S0051) is set to ON.
•
When the operand A is other than a valid constant (see Note 1) or XW/YW
register.
•
When the designated special module has been disconnected.
•
When no answer error occurs with the designated special module.
•
When the number of words transferred exceeds 256 words.
•
When the source table of transfer is out of the valid range.
•
When the destination table of transfer is out of the valid range.
Unit number
Hexadecimal
0 H00
1 H01
2 H02
3 H03
Slot number
Hexadecimal
0 H00
1 H01
2 H02
3 H03
4 H04
5 H05
6 H06
7 H07
8 H08
9 H09
10 H0A
Summary of Contents for AS311
Page 8: ...6 ASCII Interface Module AS311 ...
Page 16: ...14 ASCII Interface Module AS311 ...
Page 20: ...18 ASCII Interface Module AS311 ...
Page 21: ...User s Manual 19 Section 3 Cable Connections 3 1 RS 232C connection 3 2 RS 422 connection ...
Page 24: ...22 ASCII Interface Module AS311 ...
