External Search; Function; Interface - Mitsubishi Electric MELDAS C6 Programming Manual

10.5 External Search

10.5.1 Function

When PLC specifies the program number, sequence number, and block number of a work program
for the controller, the external search function searches memory for the program number, sequence
number, and block number.
Note that the external search from PLC high-speed processing is not possible, however.

10.5.2 Interface

PLC sets data except the status.
Two bytes
Rn+0
Two bytes
1
2
Four bytes
3
4
Four bytes
5
6
Four bytes
7
8 Two bytes
(1) Command
Sub command
F 8 7
10. Exclusive Commands 2
10.5 External Search
Command
Status
Program No.
Sequence No.
Block No.
Part system designation
Main command
1 0
1: Search
2: PLC axis control
Search mode
0: Memory search
PLC axis control
Set all to 0.
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(Note 1) File register (Rn) that can be used by the user
is used for the control data buffer.
Data register (Dn) cannot be used.
(Note 2) Part system designation is used for multi-
system specifications.
Specify "1"
(Note) Unassigned bits will be used for later function
extension. Use only bits shown here.