Data Link Area - Omron SYSMAC CS Series Operation Manual

Data Link Area

9-8

Data Link Area

Links to C200HX/HG/HE,
C200HS, and C200H PLCs
Link Area Initialization
1,2,3...
426
Data Link Area addresses range from CIO 1000 to CIO 1199 (CIO
bits 100000 to 119915). Words in the Link Area are used for data links when
LR is set as the data link area for Controller Link Networks. It is also used for
PLC Links.
A data link automatically (independently of the program) shares data with Link
Areas in other CS-series CPU Units in the network through a Controller Link
Unit mounted to the PLC's CPU Rack.
Data links can be generated automatically (using the same number of words
for each node) or manually. When a user defines the data link manually, he
can assign any number of words to each node and make nodes receive-only
or transmit-only. Refer to the Controller Link Units Operation Manual (W309)
for more details.
Words in the Link Area can be used in the program when LR is not set as the
data link area for Controller Link Networks and PLC Links are not used.
Controller
Link Unit
CPU Unit
Link Area words are also allocated to PLC Link Systems when a PLC Link is
created by connecting PLC Link Units.
PLC Link Unit
CPU Unit
Link Area words CIO 1000 to CIO 1063 in CS-series PLCs correspond to Link
Relay Area words LR 00 to LR 63 for data links created in C200HX/HG/HE
PLCs and PLC Links created in C200HX/HG/HE, C200HS, or C200H PLCs.
When converting C200HX/HG/HE, C200HS, or C200H programs for use in
CS-series PLCs, change addresses LR 00 through LR 63 to their equivalent
Link Area addresses CIO 1000 through CIO 1063.
The contents of the Link Area will be cleared in the following cases:
1. The operating mode is changed from PROGRAM mode to RUN/MONITOR
mode or vice-versa and the IOM Hold Bit is OFF.
2. The PLC's power supply is cycled and the IOM Hold Bit is OFF or not pro-
tected in the PLC Setup.
3. The Link Area is cleared from a Programming Device.
Link Areas
Controller
Link Unit CPU Unit
Controller Link Network
Link Areas
PLC Link
Unit
CPU Unit
Section 9-8
Controller
Link Unit
CPU Unit
PLC Link Unit
CPU Unit