263
IOTC(––) Section 2-7
Operand Data Ranges
Note 1. Be sure that the above ranges are not exceeded by the number of words
required for n commands.
2. If there are errors in the operand or word address specifications, the ER
Flag will turn ON and the instruction will not be executed.
Flags
Note Operation control commands can be set along with I/O allocation commands.
If an operation control command is set, set the same write data for the opera-
tion control command as was set for the I/O allocation command just prior to
it.
2-7-2 Sending Operation Control Commands
IOTC(––) can be used to send a single operation control command, simplify-
ing the ladder program.
Area C S D
IR or SR 000 to 247 000 to 255 000 to 252
HR HR 00 to HR 94 HR 00 to HR 99 HR 00 to HR 99
AR AR 00 to AR 22 AR 00 to AR 27 AR 00 to AR 27
LF LR 00 to LR 58 LR 00 to LR 63 LR 00 to LR 63
Timer/
Counter
--- TIM/CNT 000 to 511 ---
DM DM 0000 to DM 6138 DM 0000 to DM 6655 DM 0000 to DM 6143
EM EM 0000 to EM 6138 EM 0000 to EM 6143 EM 0000 to EM 6143
Indirectly
addressed
DM
*DM 0000 to *DM 6655
Indirectly
addressed
EM
*EM 0000 to *EM 6143
Constants --- *0000 to FFFF ---
SR 25503 (ER Flag) ON for error in operands or word addresses.
ON if the specified number of commands causes a
memory area boundary to be exceeded.
SR 25506 (Equals Flag) ON when all commands have been acknowledged.
If a setting range error (EE01) occurs for an item being
set or a timeout error (E900) occurs for an I/O allocation
command, the settings will not be written. Be sure to
check the read data to confirm execution.
IOTC (––)
C
#
D
+1
+2
+3
C
C: First word of area to specify the Temperature Control Unit
#: Operation control command: C@@@
D: First destination for response data
First word
Output word address (BCD: 0100 to 0115)
Input word address (BCD: 0001 to 0015)
Work word 1: Do not use.
Work word 2: Do not use.
Specify the address of the output word allocated to the Unit.
Specify the address of the input word allocated to the Unit.
Used by the system software in the CPU Unit.
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