Basic I/O Unit Instructions
Ladder Symbol
Variations
Applicable Program Areas
Operands
Operand Specifications
Description
DLNK(226)
N
Variations
Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation Not supported
Immediate Refreshing Specification
Block program areas
OK
OK
N: Unit number
Specifies the CPU Bus Unit's unit number (0000 to 000F hex or 0 to 15 deci-
mal).
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
Indirect DM addresses
in binary
Indirect DM addresses
in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
DLNK(226) performs immediate I/O refreshing for the CPU Bus Unit with the
specified unit number. The data listed below is refreshed. Refer to the Precau-
tions below for details on the execution conditions to use for immediate
refreshing.
1. The words allocated to the CPU Bus Unit in the PLC's CPU Bus Unit Areas
(25 words in the CIO Area and 100 words in the DM Area)
2. Data specific the CPU Bus Unit such as data link data or DeviceNet Re-
mote I/O Communications data (refreshed together with the data in the
CPU Bush Unit Areas)
CPU Bus Unit
Controller Link Unit
DeviceNet Unit
N: Unit number
Step program areas
Subroutines
OK
N
CIO 0 to CIO 6143
W0 to W511
H0 to H511
A448 to A959
T0000 to T4095
C0000 to C4095
D0 to D32767
@ D0 to @ D32767
*D0 to *D32767
#0000 to #000F (binary) or 0 to 15 (decimal)
DR0 to DR15
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Data refreshing specific to the Unit
Data link refreshing
Remote I/O communications refreshing
Section 3-22
DLNK(226)
@DLNK(226)
Not supported
Interrupt tasks
OK
801
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