Interlock Program Example - Mitsubishi Electric Q Series Reference Manual
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- Programming manual (524 pages) ,
- User manual (276 pages) ,
- Operation manual (33 pages)
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6 PROGRAMMING
6.2.3 Interlock program example
Sending station
1)
6 - 8
When data larger than two words (32 bits) are transferred at one time with the 32-bit
data guarantee function or the block guarantee per station function disabled, old and
new data may be mixed in units of one word (16 bits).
As in the example below, the program should be interlocked using the oldest number
of either the link relay (B).
2)
3)
7)
1)
The send command turns on.
2)
The contents of D0 to D2 are stored in W0 to W2.
3)
Upon completion of storage in W0 to W2, B0 for handshaking turns on.
4)
By cyclic transmission, the link relay (B) is sent after the link register
(W), which turns on B0 of the receiving station.
5)
The contents of W0 to W2 are stored in D100 to D102.
6)
Upon completion of storage in D100 to D102, B100 for handshaking
turns on.
7)
When the data is transmitted to the receiving station, B0 turns off.
POINT
This interlock program example is not usable in the MELSECNET/H Extended
mode. Use the block guarantee per station.
Receiving station
4)
MELSEC-Q
5)
6)
6 - 8
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Troubleshooting
