Input Area
Area you can use for inputs is divided into 28 x 16-bit areas.
The Input Area field displays the input area number and associated bits in brackets "input area number (start bit - end bit)". You cannot edit the Input Area.
Input Type
Select the input type from either [Bit] or [Word].
Output Area
Area you can use for outputs is divided into 28 x 16-bit areas.
The Output Area field displays the output area number and associated bits in brackets "output area number (start bit - end bit)". You cannot edit the Output Area.
Output Type
Select the output type from either [Bit] or [Word].
Retentive output when controller ends
Select whether or not you want to retain output values when the logic program stops. Select the check box to retain outputs.
The following operations will reset outputs.
Turn OFF the display unit.
Restart the display unit.
Go to offline mode.
Transferring a project.
Required scan time
Displays the scan time with the current settings and I/O points as : XX milliseconds (Input/Output: YY Points/ZZ Points).
The required scan time is calculated as shown in the following table.
|
Area in Use*1 |
I/O Points |
Required scan time |
|
Unused or 0 to 1 |
Input/Output: 32Points/32Points |
10 ms |
|
2 to 3 |
Input/Output: 64Points/64Points |
10 ms |
|
4 to 7 |
Input/Output: 128Points/128Points |
10 ms |
|
8 to 11 |
Input/Output: 192Points/192Points |
14 ms |
|
12 to 15 |
Input/Output: 256Points/256Points |
18 ms |
|
16 to 19 |
Input/Output: 320Points/320Points |
22 ms |
|
20 to 23 |
Input/Output: 384Points/384Points |
26 ms |
|
24 to 27 |
Input/Output: 448Points/448Points |
30 ms |
*1 "Area in Use" refers to the largest area number mapped to a variable.
For example, when you map I3 (bit 35) of Input Area 2 (32-47), and Q3 (bit 163) of Output Area 10 (160-175), the "Area in Use" is 10.
When the send/receive values between the first and second cycles match, the I/O status is updated. When the data values had changed in the second cycle, the I/O status is not updated.
The approximate communication time for one cycle is as follows.
|
I/O Points |
Approximate communication time |
|
Input/Output: 32Points/32Points |
1.7 ms |
|
Input/Output: 64Points/64Points |
2.7 ms |
|
Input/Output: 128Points/128Points |
4.8 ms |
|
Input/Output: 192Points/192Points |
6.8 ms |
|
Input/Output: 256Points/256Points |
8.9 ms |
|
Input/Output: 320Points/320Points |
10.9 ms |
|
Input/Output: 384Points/384Points |
13.0 ms |
|
Input/Output: 448Points/448Points |
15.0 ms |
From the [System Settings], in the [Logic Programs] page, when [Register Variable] uses the [Address Format] option, the required scan time is 30 milliseconds as all I/O are mapped.