Mitsubishi Electric MELSEC iQ-R Series - Page 48

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4 PRECAUTIONS FOR USE OF SAFETY PROGRAMMABLE CONTROLLER
4.2 Precautions for Programming
*1 A safety station interlock release request is executed when the bit rises, and the interlock status is then released. To release the
interlock again, it is necessary to turn the request off and on again. After eliminating the cause of any communication errors, turn on the
request with the Safety CPU. When performing safety communications between Safety CPUs, perform this operation with both Safety
CPUs.
For details, refer to the following.
 MELSEC iQ-R CPU Module User's Manual (Application)
■Program example of releasing interlock
The following diagram shows a program for releasing interlock for the first module of the CC-Link IE Field Network of the CC-
Link IE Field Network master/local module connected to the following base unit. The following diagram shows a program
example used for checking safety station interlock status with safety connection No.1 using SA\SD1232.0 and releasing
safety station interlock of safety connection No.1.
Interlock release request for each safety
connection (8th module)
SA\SD1352 to SA\SD1359 0: I/O interlock of safety station on CC-Link IE Field Network not released
1: I/O interlock of safety station on CC-Link IE Field Network released
Turn off and on the bit corresponding to the safety connection to release the interlock.
(The bit does not automatically turn off after execution is complete.)
*1
1 to 120: Safety connection numbers
: Fixed to 0.
Name No. Description of bits of special register
16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65
96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97
120 119 118 117 116 115 114 113
SA\SD1352
SA\SD1353
SA\SD1354
SA\SD1355
SA\SD1356
SA\SD1357
SA\SD1358
SA\SD1359
ON OFF
OFF OFF
OFF
ON
ON
OFF
ON
Safety station interlock status
Safety station interlock release
request
An error occurs in
communications
with a safety station.
A safety station
interlock is
released.
An error occurs in
communications
with a safety station.
A safety station
interlock is
released.
The relay is enabled
on the rising edge.
The relay is enabled
on the rising edge.
SET SA\SD1240.0
SA\SD1232.0
Safety station interlock
release request
Safety station
interlock status
Reset
switch
RST SA\SD1240.0
Safety station interlock
release request
Safety station interlock
release request
Safety station
interlock status
SA\SD1240.0SA\SD1232.0