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38
I/O
Data contents
Data item
Address
Bit
Word
Output
n+1
15 to 00
Write data
Set the SP for a write operation as 4-digit BCD data. The least
significant digit of the actual data matches the least significant
digit of the set value. Set the most significant digit to F for minus
(–) values. The write operation commences when the write
request flag (Wd (n+2), bit 00 ) turns ON.
n+2
15 to 12
Loop 1
executed
bank
number
Set the bank number currently executed for Loop 1 and Loop 2 as
1-digit BCD data. Executed bank numbers are from 1 to 8. If the
value is set out of this range, the bank number reverts to the
previous value.
11 to 08
Loop 2
executed
bank
number
e ous a ue
07
Loop 1
MAN
This is the Loop 1 Manual Output Mode bit. When it is set to 1,
the Unit goes into Manual Output Mode.
06
Loop 1
RUN
This the Loop 1 Run/Stop bit. When it is set to 1, operation starts;
when it is set to 0, operation stops.
05
Loop 2
MAN
This is the Loop 2 Manual Output Mode bit. When it is set to 1,
the Unit goes into Manual Output Mode.
04
Loop 2
RUN
This the Loop 2 Run/Stop bit. When it is set to 1, operation starts;
when it is set to 0, operation stops.
03 to 01
---
Not used. Set to 0.
00
Write
request
Turn this bit ON to write the data in Wd (n+1), by means of this
command.
Turn this bit OFF after the Write Complete Flag (Wd (n+6), bit 08)
turns ON.
Input
n+3
15 to 00
Loop 1 PV
Outputs the Loop 1 and Loop 2 PV (process value) as 4-digit
BCD data. The decimal point position is designated by the
n+4
15 to 00
Loop 2 PV
BCD data. The decimal oint osition is designated by the
“decimal point position” parameter. Set the most significant digit
to F for minus (–) values.
n+5
15 to 00
Read data
Outputs the data read with the commands set with Wd (n). The
decimal point position is designated by the “decimal point position
” parameter. Set the most significant digit to F for minus (–)
values.
n+6
15 to 12
---
Not used. Each bit is set to 0.
11
Write error
Bit set to 1 when the write data exceeds the set permissible
range. The bit is automatically set to 0 when the Write Request
Flag (Wd (n+2), bit 00) turns OFF.
10 and 09
---
Not used. Each bit is set to 0.
08
Write
complete
Bit set to 1 when the write operation executed by means of the
command set with Wd (n) ends normally. The bit is automatically
set to 0 when the Write Request Flag (Wd (n+2), bit 00) turns
OFF.
07 to 01
---
Not used. Each bit is set to 0.
00
Read
complete
Bit set to 1 when the read operation executed by means of the
command set with Wd (n) ends normally. The bit is automatically
set to 0 when the next command is set.
Memory Allocation