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0110
00
(191)
WRIT
0001
D00010
0004
0000
01
A500
06
0110
00
Equals
Flag
382
Flags
ER (A50003):
Content of
*
DM word is not BCD when set for BCD.
D is not allocated to a Special I/O Unit.
N is not BCD.
Instruction executed transferring more than 255 words to a
Special I/O Unit on a SYSMAC BUS/2 Slave Rack.
CY (A50004):
This Flag operates only for Special I/O Units mounted to
SYSMAC BUS/2 Slave Racks and turns on for the following:
The Special I/O Unit or Slave is busy.
An error has occurred in the Special I/O Unit.
Word operands have been designated for a Special I/O Unit
that requires a constant.
The Slave is not set to 54MH.
The communications path is not normal.
EQ (A50006):
OFF while data is being written; ON when writing has been
completed.
Example 1
When CIO 000001 is ON in the following example, the number of words speci-
fied in CIO 0001 is read consecutive from words starting at D00010 and trans-
ferred to the Special I/O Unit through CIO 0004 (the I/O word allocated to the
Special I/O Unit).
The following program section uses a self-holding bit to ensure that the write op-
eration is executed even if the Special I/O Unit (or Slave Rack) is busy when
WRIT(191) is executed. The type of programming is also effective when the read
operation requires more than one cycle. The Equals Flag, which turns ON when
the reading operation is completed, is used to end execution.
Address
Instruction
Operands
00000
LD
000000
00001
OR
011000
00002
WRIT(191)
0001
D00010
0004
00003
AND NOT
A50006
00004
OUT
011000
Special I/O Instructions
Section 5-33
Summary of Contents for CVM1D
Page 462: ...SYSMAC CVM1D Duplex System Programmable Controllers Operation Manual Revised August 2001...
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