Other Devices; Devices - Mitsubishi Electric MELDAS C6 Interface Manual

5. OTHER DEVICES

5.1 Devices

In addition to X, Y, and R, SM, SD devices described above, the following devices exist:
Name
Internal relay
Latch relay
Timer
Counter
Data register
File register
The assignment tables for the above tables are on the following pages. Copy and use them as
necessary.
5. OTHER DEVICES
5.1 Devices
Symbol
M (1) Internal and latch relays are auxiliary relays in the sequence
F that cannot directly be output to the external.
L (2) The latch relay L will be backed up even if the power is
turned OFF.
(3) The internal relay F may be used as the interface for the
alarm message display.
T (1) Timer T is count-up timer.
(2) Timer T can set the timer value from either the sequence
program or display.
(3) The 100ms, 10ms and 100ms integral timer are available.
C (1) Addition system counter C.
(2) Counter C can set the counter value from either the
sequence program or screen.
D (1) The data register stores sequence data.
(2) One data register consists of 16 bits and can be read or
written in 16-bit units. To handle 32-bit data, two data
registers are used. The data register addressed by a 32-bit
instruction is used as the low-order 16 bits; the data register
addressed by the specified data register number +1 is used
as the high-order 16 bits.
R (1) The file register release area can be used in the same
manner as the data register.
(2) The file register uses a 16-bit structure for 1 point, and reads
and writes in 16-bit units.
Two points are used to handle 32-bit data. The file register
No. designated with the 32-bit command is the low-order
16-bit, and the designated file register plus one is the
high-order 16-bit.
Refer to section "2.9 File Register General Map" for details
on the release area of file register.
Description
5-1