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10. Exclusive Commands 2
10.5 External Search
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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
Command
Status
Program No.
Sequence No.
Block No.
Part system designation
Rn+0
1
2
3
4
5
6
7
8
(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.
Two bytes
Four bytes
Four bytes
Four bytes
Two bytes
(1) Command
Sub command
Main command
F8710
1: Search
2: PLC axis control
Search mode
0: Memory search
PLC axis control
Set all to 0.
Specify "1"
(Note)
Unassigned bits will be used for later function
extension. Use only bits shown here.