Controller Link Units Operation Manual
17
Specifications and Configurations Section 1-2
Note A Controller Link Support Board can be installed into an IBM PC/AT or com-
patible computer to connect the computer to the network. Refer to the Con-
troller Link Support Boards Operation Manual (W307) for details. 
Item Specifications
Model CVM1-CLK21 CQM1H-CLK21
External 
appearance
Installation 
devices
None required. None required.
PLC CVM1 and CV-series PLCs CQM1H-CPU51/61
Max No. of 
Units per PLC
4 maximum 1 maximum
Installation site Install onto a CPU Backplane or 
Expansion CPU Backplane (Classi-
fied as a CPU Bus Unit.)
Connected as a Communi-
cations Unit between Power 
Supply Unit and CPU Unit.
Storage loca-
tion for net-
work 
parameters
CPU Bus Unit Area (in the CPU Unit 
parameter area)
Controller Link Unit
Storage loca-
tion for routing 
tables
CPU Unit parameter area DM 6450 to DM 6499 in 
CPU Unit
Weight 550 g 200 g
Current con-
sumption
300 mA 290 mA
CPU Backplane
Expansion CPU 
Backplane
3/5/10 slots
11 slots
CPU 
Unit
Of these 
14, 16, or 
21 slots, 
installa
tion is 
possible 
in up to 4 
slots.
CPU 
Unit
Power Supply 
Unit
Connect 
here.










