Omron CPM2C User Manual

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Data Refresh Intervals (Reference Data) Section 7-8
7-8 Data Refresh Intervals (Reference Data)
The following table shows the period between data refreshes for various com-
munications conditions. The actual period depends upon the system configu-
ration and size of the user program, so these values are approximate.
Note 1. The refresh period is not fixed because the communications response
times of the components and the CPU Unit are not fixed. The refresh peri-
ods shown in the table above are average times for the given conditions.
2. The number of read data items and write data items show the number of
data items read and written for each component. When SYSWAY commu-
nications are used, the number of items is determined by the command
group that has been selected.
7-9 Example Application
This section shows the system configuration and settings of an example sys-
tem to help explain how to use the Simple Communications Unit.
Communications
speed (bps)
Number of
components
connected
Communications
protocol
Read data
items
Write data
items
Command
group
Refresh
period
9,600 16 CompoWay/F 12 × 16 = 192 12 × 16 = 192 --- 52 s
9,600 16 CompoWay/F 12 × 16 = 192 0 --- 25 s
19,200 16 CompoWay/F 12 × 16 = 192 12 × 16 = 192 --- 35 s
19,200 16 CompoWay/F 12 × 16 = 192 0 --- 16 s
19,200 16 CompoWay/F 1 × 16 = 16 0 --- 4 s
9,600 16 CompoWay/F 0 1 × 16 = 16 --- 8 s
19,200 16 CompoWay/F 0 1 × 16 = 16 --- 5 s
19,200 4 CompoWay/F 1 × 16 = 16 0 --- 1.5 s
19,200 4 CompoWay/F 0 1 × 16 = 16 --- 2 s
9,600 16 SYSWAY Yes Yes 4 20 s
9,600 16 SYSWAY Yes No 4 10 s
19,200 16 SYSWAY Yes Yes 4 15 s
19,200 16 SYSWAY Yes No 4 7 s
9,600 16 SYSWAY No Yes 1 5 s
19,200 16 SYSWAY No Yes 1 4 s
19,200 4 SYSWAY Yes No 1 1 s
19,200 4 SYSWAY No Yes 1 1.2 s

Omron CPM2C Specifications

General

Brand	Omron
Model	CPM2C
Category	Controller
Language	English