FR-A5ND
DeviceNet
Communications Option Unit
55
6.10
Response Timing
Item 1. Polling Reading & Request Without Changing State:
Explicit Messaging (G2 & G3) Get-Attribute Reading Data:
Item 2. Polling Writing & Request With Changing State:
Explicit Messaging (G2 & G3) Set-Attribute Writing Data
(Excluding Items 3 & 4):
Item 3. PrClr, PrAllClr, PrUsrClr, PrClr(ECP), PrAllClr(ECP), PrUsrClr(ECP):
Item 4. INV Reset & Pr340 = 0:
The drive will go to Ext-mode afterwards.
6.11
Recommendation For Software Developers
For software developers only:
a. Make a handshake procedure, send a request, wait for response, then
go to next request.
b. Set waiting time between each message based on FR-A5ND specifica-
tions above, e.g. for reading set to 1ms each time; for writing set to
30ms each time.