
604
7 APPLICATION INSTRUCTION
7.20 Timing check instruction
DHOURM
This instruction measures the on time of the input contact in units of hour.
Setting data
■
Descriptions, ranges, and data types
■
Applicable devices
Processing details
• This instruction measures the period of time for which the input contact is on in units of hour, and turns on the device
specified by (d2) when the accumulated ON time exceeds the time (32-bit binary data) specified in (s).
• In (s)+1 and (s), specify the period of time until the device specified by (d2) is turned on in units of hour.
• The measured current value in units of hour is stored in (d1)+1 and (d1). ((d1)+1: highest-order, (d1): lowest-order)
• The measured current value of less than one hour (in units of second) is stored in (d1)+2.
• (d2) is set to on when the current value in (d1)+1 and (d1) exceeds the time specified by (s).
• Specify a latched (battery backed) type data register as (d1) so that the current value data can be continuously used even
after the power to CPU module turns off. If a general data type register is used, the current value data is cleared when the
power to the CPU module is turned OFF or when the controller mode switches from STOP to RUN.
• Even after the alarm output specified by (d2) turns ON, the measurement is continued.
• When the current value reaches the maximum value of 32-bit data, the measurement is stopped. For continuing the
measurement, clear the current value stored in (d1) to (d1)+2.
Precautions
• Three devices are occupied by (d1). Make sure that these devices are not used by other machine controls.
Operation error
Ladder diagram
Structured text
ENO:=DHOURM(EN,s,d1,d2);
Operand
Description
Range
Data type
Data type (label)
(s)
Time after which the alarm (d2) is set to on (unit: hour)
32-bit signed binary
ANY32
(d1)
Device for storing the measured current value (latched (battery
backed) type data register)
32-bit signed binary
ANY32
(d2)
Device to be turned on when timeout occurs (alarm output)
Bit
Bit
Operand
Bit
Word
Double word
Indirect
specification
Constant
Others
X, Y, M, L,
SM, F, B, SB
U
\G
T, ST,
C, LC
T, ST, C, D,
W, SD, SW, R
U
\G
Z
LC
LZ
K, H
E
$
(s)
(d1)
(d2)
Error code
(SD0/SD8067)
Description
2820
The device areas specified by (d1) exceed the corresponding device range.
3405
The value of (s) is negative.
(s)
(d1)
(d2)
Summary of Contents for MELSEC iQ-F FX5 series
Page 1: ...MELSEC iQ F FX5 Series Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 21: ...19 PART 1 PART 1 OVERVIEW Part 1 consists of the following chapter 1 OVERVIEW ...
Page 98: ...96 4 STANDARD FUNCTIONS FUNCTION BLOCKS 4 2 Standard Function Blocks MEMO ...
Page 840: ...838 23 TIME DATA FUNCTIONS 23 4 Division MEMO ...
Page 887: ......