141
Sequence Control Instructions Section 3-4
Operands N: Interlock Number
The interlock number must be between 0 and 15. Match the interlock number
of the MILH(517) (or MILR(518)) instruction with the same number in the cor-
responding MILC(519) instruction.
The interlock numbers can be used in any order.
D: Interlock Status Bit
• ON when the program section is not interlocked.
• OFF when the program section is interlocked.
When the interlock is engaged, the Interlock Status Bit can be force-set to
release the interlock. Conversely, when the interlock is not engaged, the Inter-
lock Status Bit can be force-reset to engage the interlock.
Operand Specifications
Variations
Applicable Program Areas The following table shows the applicable program areas for MILH(517),
MILR(518), and MILC(519).
MILC(519)
N
N: Interlock Numbe
Area N D
CIO Area --- CIO 0.00 to CIO 6143.15
Work Area --- W0.00 to W511.15
Holding Bit Area --- H0.00 to H511.15
Auxiliary Bit Area --- A0.00 to A959.15
Timer Area --- ---
Counter Area --- ---
DM Area --- ---
Indirect DM addresses
in binary
--- ---
Indirect DM addresses
in BCD
--- ---
Constants 0 to 15 ---
Data Registers --- ---
Index Registers --- ---
Indirect addressing
using Index Registers
--- ,IR0 to ,IR15
–2048 to +2047 ,IR0 to
–2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
Variations Interlocks when OFF/Does Not interlock when ON MILH(517) and
MILR(518)
Immediate Refreshing Specification Not supported
Variations Executed Each Cycle for ON Condition MILC(519)
Immediate Refreshing Specification Not supported
Block program areas Step program areas Subroutines Interrupt tasks
Not allowed Not allowed OK OK
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