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Examples of Counter Unit Operation Section 3-1
3-1 Examples of Counter Unit Operation
This section, using the system configuration shown below as an example,
explains how to use the Counter Unit.
3-1-1 Counter Unit Word Allocation for Functions
Setting and control for the Counter Unit is executed by writing to the allocated
area in the output area of the Master, and status check and monitoring is exe-
cuted by reading the allocated area in the input area of the Master. The allo-
cated area for the Counter Unit, with the system configuration shown above, is
given below (this example is for fixed allocation). For details about area alloca-
tion for a MULTIPLE I/O TERMINAL (Communications Unit) on a DeviceNet
Master, refer to the DeviceNet Operation Manual (W267). For details about
area allocation for a Counter Unit in the area used by a MULTIPLE I/O TER-
MINAL, refer to 1-2-3 Allocating I/O.
Functions are allocated to the words as shown below. This is only a basic list.
For details, refer to 5-4 GT1-CT01 Counter Unit.
C200HW-DRM21-V1 Master Unit
(node number 0, unit number 0)
C200HX
DeviceNet Network
GT1-CT01
Counter Unit (#0)
Encoder
DRT1-COM Communications Unit
(node number 1)
Communications
node number
Output area
Counter Unit #0
(For setting and
writing in)
Input area
Unused
Unused
I/O Unit interface status
for node number 01
Counter Unit #0
(For status check
and reading)
CIO 51
CIO 52
CIO 53
CIO 54
CIO 55
CIO 351
CIO 352
CIO 353
CIO 354
CIO 355
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