Performance
Section 7-5
108
7-5
Performance
7-5-1
Number of devices
As specified, the CJ1W-PNT21 IO Controller can cyclically exchange I/O data
with up to 126 PROFINET IO Devices. The rate at which it can service IO
Devices depends on the number of connected devices and the size and
complexity of the data. Especially with modular I/O devices, the IO Controller
needs time to pack and unpack the I/O data of each device module and
convert them to the correct representation in the PLC.
Measurements with various I/O configurations have been done to determine
the boundaries of the IO Controller's performance. At different Update Rates,
the greatest number of SmartSlice IO Devices was determined at which the
cycle times can be maintained reliably. These measurements were done for
SmartSlice stations with a minimum I/O configuration, a typical configuration,
and a maximum configuration.
SmartSlice IO Configurations:
•
Minimum:
Each IO Device has 1 x OD4-1, 1 x ID4-1 and an END-M
connected. This results in 1 data word output and 2 data words input. The
number of modules is 4.
•
Typical:
Each IO Device has 4 x ID8-1, 3 x OD8-1, 1 x AD2, 1 x DA2V and
1 x END-M. This results in 8 data words input and 5 data words output. The
number of modules is 13.
•
Maximum:
Each IO Device has the maximum number of units connected
(64) and has the maximum amount of I/O data (64 words output and 65
words input). This is reached by connecting 19 x CP1-L, 22 x OD4-1, 22 x
ID4-1 and 1 x END-M.
Number of SmartSlice stations that can be serviced at each Update Rate:
/i
Update Rate
Minimum
configuration
Typical
configuration
Maximum
configuration
8ms
10
10
7
16ms
20
17
13
32ms
35
25
20
64ms
65
45
35
128ms
90
65
55
256ms
126
80
55
512ms
126
105
55
Summary of Contents for CJ1W-CRM21
Page 1: ...CJ1W PNT21 PROFINET IO Controller Unit OPERATION MANUAL Cat No W12E EN 02 ...
Page 2: ......
Page 7: ...vii ...
Page 16: ......
Page 26: ...Basic operating procedure Section 2 4 10 ...
Page 46: ...Installation of Configuration Software Section 3 5 30 ...
Page 76: ...Generic IO Device DTM Section 4 4 60 ...
Page 156: ...140 ...
Page 164: ...146 ...
Page 168: ...150 ...
Page 170: ...Section 152 ...